The Tac-Armor is the only armor left over inside of shelter. It has gone mostly unused in 200 years. While still in fine condition, no one really knows much about it. No one trained in its use and would probably be unconformable for most over long periods of time.
The Tac-Armor is a liquid armor development in that it is layered between layers of Kevlar and will protect from stabbing as well as bullets. It is also radiation resistant, as well as fire or heat resistant. It has an air filtering process as well as it has a small air reserve for underwater exercises.
Over all the Tac-Armor gets a -10 to AC.
The Tac-Armor is simular to some of the protective gear that scientist wear inside the Shelter, but far more snug.