Stark Tower - Pepper, MJ, & Optionally Open to JLA to fetch comms
[JARVIS has secured Stark Tower; it's a damned fortress, and looters haven't been able to penetrate Tony's absolutely paranoid security more than two floors up or down, which is practically nothing. Visitors who land in public places and can fly are able to access the landing pad, but an attempt to penetrate the "glass" walls is not permitted unless serious force is used.
Comms can be picked up by one of the two redheads (what, does he collect them?) inside if they're available, though sometimes they comms can be found on an exterior patio table if Mary Jane is quick enough to manufacture and reprogram additional earpieces.
Obviously, the custom black comm, with its slim yet flexible surface, is the only one made for a certain someone's cowl. (Aww. It's like a love letter, Bats.) The others are interchangeable, and identification and programming for whose is whose are based upon JARVIS's identification (thank you, DC Comic Door Wikipedia).
Comms report to JARVIS they are deactivated in three scenarios: 1) the user turns them off, 2) they are completely destroyed, or 3) they are separated from a nice warm ear and the temperature variation sets it off in sixty seconds.]