AH-1Z Viper lifts off

A U.S. Marine Corps AH-1Z Viper with Medium Tiltrotor Squadron 262 (Reinforced), 31st Marine Expeditionary Unit, takes off during Amphibious Landing Exercise (PHIBLEX) 15 at Clark Air Base, Pampanga, Philippines, Oct. 4, 2014. PHIBLEX is an annual, bilateral training exercise conducted by the Armed Forces of the Philippines, U.S. Marines and Navy to strengthen interoperability across a range of capabilities to include disaster relief and contingency operations.