KENNER, La. Miles Ezell, a senior tool pusher with Transocean, swears in before testifying at the Deepwater Horizon joint investigation hearing, May 28, 2010. The Coast Guard and Minerals Management Service are co-chairing the joint investigation launched to determine the cause of the initial incident and fire aboard the mobile offshore drilling unit (MODU) Deepwater Horizon. (USCG) 10Spill0528-G-7400K-005
