Oklahoma tornado: Before and after photos

Undated aerial photo of Briarwood Elementary School before Monday's tornado

This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013 — AP/Steve Gooch

This aerial photo shows the remains of Briarwood Elementary School and homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013.

Undated aerial image of a neighborhood on Santa Fe Avenue Moore, Okla.

An aerial view shows an entire neighborhood destroyed by Monday's tornado — AP/Tony Gutierrez

An aerial view shows the same neighborhood destroyed by Monday's tornado.

Undated aerial photo of Moore Medical Center

This aerial photo shows damage to Moore Medical Center after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013.

Undated image of Oklahoma City suburbs

This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Undated image of Plaza Towers Elementary School

This aerial photo shows damage to Plaza Towers Elementary School after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013.