A Royal Navy Lynx HMA.8 helicopter takes off from the US aircraft carrier, USS Nimitz. Note the .50 HMG mounted in the cabin door. There is only normally room for one door gun on a Lynx. The helicopter's firepower is sometimes augmented by the presence of a Royal Marines Maritime Sniper Team armed with .50 caliber sniper rifles.
U.S. Navy photo by Mass Communication Specialist Seaman Class Nichelle Noelle Whitfield)