Royal Marines of 40 Commando during live firing training for a FIBUA attack (Fighting In Built Up Area) in the USA . They were supported by two American M1 Abrams Tanks during the Combined Arms Live Firing Exercise (CALFEX) phase of Black Alligator 13. *Organization: Royal Navy *Object Name: SH130046050 *Category: MOD *Supplemental Categories: People, Royal Marines, Operations, Exercises *Keywords: 40 Commando, Black Alligator 13, CALFEX, FIBUA, USA, Exercise, Black Alligator 12, Royal Navy, Royal Marines, Personnel, Non-Identifiable, Silhouette, Smoke *Country: USA