Petty Officer 1st Class Daniel Citizen, an engineman, from Lafayette, La., front, and Petty Officer 2nd Class David Larson, also an engineman, from Bigelow, Ark., prepare the main machinery room number 2 operating station for an operational test of the ship's number 2 bravo diesel engine aboard the amphibious dock landing ship USS Fort McHenry. Fort McHenry is participating in Operation Unified Response after a 7.0 magnitude earthquake caused severe damage in and around Port-a-Prince, Haiti Jan. 12.