Petty Officer 3rd Class Kenyoun Davis, aviation machinist's mate, from Mililani, Hawaii, applies sealant to a wing of an EA-6B Prowler assigned to the Cougars of Tactical Electronic Warfare Squadron 139, in the hangar bay of the aircraft carrier USS Ronald Reagan. VAQ-139 is embarked aboard Ronald Reagan completing a Composite Training Unit Exercise in preparation for an upcoming deployment.