Military personnel wade in the water and search on the beach under heavy fog at Eglin Air Force Base, Fla., Wednesday, March 11, 2015, for the wreckage of a military helicopter that crashed with 11 service members aboard. The helicopter went down Tuesday evening. A Pentagon official says all aboard are presumed dead.

Credit: (AP Photo/Melissa Nelson-Gabriel)

Photos: Military Helicopter Crash

The identities of the Marines killed on board a Black Hawk helicopter that went down near Florida on a training mission have been released.

Anita Blanton on guardrail testing

Officials release final guardrail test results

The Federal Highway Administration (FHWA) says guardrails that have come under fire for their safety in recent months have passed every test…