Military.

A soldier in camouflage gear and a bucket hat holds a rifle in a ready stance, then the scene cuts to a soldier in black tactical gear with a helmet and night vision device, followed by a soldier rappelling down a building, then a soldier in full combat gear with a face mask, then a group of soldiers walking in a dusty environment, and finally a soldier in black tactical gear standing with a military dog. The setting shifts between an outdoor area with buildings and a dusty, open environment.