National Incident Commander Admiral Thad Allen, said Sept. 4, 2010, "The damaged Blow Out Preventer (BOP), along with the Lower Marine Riser Package (LMRP) Cap, have been removed from the Gulf of Mexico and are currently on board the Q4000. The BOP is considered evidentiary material, and is now under the supervision of the Deepwater Horizon Criminal Investigation Team and FBI Evidence Recovery Team."