Yancy Keplinger testified at the U.S. Coast Guard and Bureau of Energy Management joint investigation of the April 20, 2010, Deepwater Horizon oil rig explosion in the Gulf of Mexico. He was the rig crew member in charge of monitoring danger alarms on the Deepwater Horizonand testified that the rig’s general alarm didn’t sound until after the first explosion. He was on the bridge of the rig during the explosion. 
This hearing was the second day of the fifth session of hearings of the Deepwater Horizon joint investigation.