Visible crew/equipment: During the chase scene in the access tunnels under the dam, there are several shots where the camera is in front of Harrison Ford moving backwards, showing him as he runs from Tommy Lee Jones. You can see the tracks that the camera dolly is riding on.
Visible crew/equipment: When Kimble is walking through town the morning after his escape from the bus, he passes by windows, and one shows a Steadicam camera man in the reflection.
Visible crew/equipment: When Kimble starts to move out from under the train, he looks up and we see smoke visible above. There is also a crew member looking down into the hole on the far right side of the opening. The person's head moves up at the end of the shot.
Visible crew/equipment: The camera filming the wide shot of the press conference with the US Marshals and Chicago PD blends in with the rest of the camera crews there doing the conference. It is blatantly visible behind everyone asking questions. The angle from this camera is used at least twice. You can identify it by its film magazine. Almost all news organizations in the 1990s used video tape as opposed to film, so a film camera used during a press conference would and does stick out like a sore thumb.
Answer: It's a cold compress. You squeeze it, and the inner bag breaks mixing chemicals and it gets very cold. It helps to minimize swelling. He gave it to Kimball for all the bruises he had.
Grumpy Scot