Angela is on the perimeter guard search and rescue team, so she'll help get people out (and she won't even ask for anything in return). Her armor flies so she can get people out through windows and stuff.

Bill is only on the 2nd floor, so you'd think she'd be fine, but the power's going out and there's a rush of people in the stairwell, so she's going to trip and fall and twist her ankle. Taking volunteers for concerned citizens who'd help her get out on a bum leg.