Exercise Black Alligator – Royal Marines from Kilo Company, 42 Commando RM have carried out live firing exercises in California.       The training for the men of 42 Commando RM took place at one of the world’s biggest live-fire ranges, the US Marine Corps Air-Ground Combat Center at Twentynine Palms, 932 square miles of desert/mountainous terrain – that’s nearly twice the size of Greater Manchester.