What they do when your on a solo mission
Steve
Steve sat in the ops room watching live feed if there is one, if not he would listen to radio communications coming into the ops room. He would meet you at the door when you return, a look of sheer relief on his face.
Tony
Tony tries to distract himself in the lab. He tries to build something but it often ends in frustration as he can’t concentrate without knowing if your safe or not.
Thor
Thor goes to Asguard and gets Heimdall to watch you. Thor stays with him the whole time listening to Heimdalls updates. He returns to earth when you are safely back on base.
Bruce
Bruce goes to the beach. It helps him to remain calm when all he can really do is panic.
Clint
Clint sits in the vents above the ops room and listens in for when you’ll be back. He knows your capable, but well shit happens.
Sam
Sam goes down to the VA, sometimes listening to others helps to distract him from worrying about you
Pietro
Pietro goes for a run. The motion of running is familiar and comforting to him, it eased the worry slightly.
Wanda
Wanda cleans. She just has so much nervous energy, so she channels it into something useful. You always came back to the facility to a shining clean room as that’s where she started.
Natasha
You were rarely aware of when you were going on solo missions. You were generally told to go to a meeting and then sent straight on mission after. This is so Nat wouldn’t try to go with you. She knows you can do it but after you were injured she didn’t want to take chances. She only found out after you left. She would try to go after you, but ended up in the room that you shared sat on your side of the bed flicking through the pictures of you she had on her phone, trying to ignore all the thoughts of what could happen to you. Once you returned you were immediately wrapped in her arms.
Maria
Maria used her position of Assistant Director to keep an eye on your mission. She would always deny, this but if she didn’t like an extraction plan another agent would be assigned to the mission instead. When you were on mission she had the latest details of the mission up on her tablet/computer. She would watch intently at the changing feed, entirely still, first clenched until you were back on base.