The military guards the gate out of the neighborhood in episode 1x04 "Not Fade Away". Ofelia throws bottles at the gate while asking where her mother is in episode 1x05 "Cobalt". From episode 1x06 "The Good Man".
Moyers makes an announcement and then the military distributes supplies in episode 1x04 "Not Fade Away".
Alicia and Chris are walking back when several military humvees pass them by heading out of town in episode 1x05 "Cobalt".