NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard near a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard near a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images).
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: A man and woman pause at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard near a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
(Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
FILE - People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. (Photo by Spencer Platt/Getty Images)
<> on March 24, 2016 in New York City.
<> on March 24, 2016 in New York City.
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard near a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
People wait in a security line at John F. Kennedy Airport on March 24, 2016 in New York City. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
File photo of JFK Airport. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
John F. Kennedy Airport/ File photo. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard near a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
<> on March 24, 2016 in New York City.
<> on March 24, 2016 in New York City.
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: U.S. Soldiers stand guard LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: A police officer stands guard LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People enter John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People enter John F. Kennedy Airport (JFK) on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: A U.S. Soldier gets food while on guard at LaGuardia airport on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at LaGuardia airport
on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
Airlines move on the tarmac at LaGuardia airport on March 24, 2016. (Photo by Spencer Platt/Getty Images)
New York Airports Remain On High Alert After Brussels Terror Bombing
NEW YORK, NY - MARCH 24: People wait in a security line at LaGuardia airport
on March 24, 2016 in New York City. Following the deadly terrorist attacks in Brussels, airports and train stations around the country have added additional soldiers and police officers in an ongoing effort to deter other potential terrorists. (Photo by Spencer Platt/Getty Images)
