Radiation suit case (Fallout 3)

A radiation suit case is a storage container in Fallout 3 and Fallout: New Vegas.

Fallout 3

 * A radiation suit case can be found in the Franklin Metro utility tunnels. It is underneath the water in the flooded passage before you reach the area with the Burnmaster.

Fallout: New Vegas

 * A radiation suit case can be found at Crescent Canyon east, next to the blue semi-trailer, partially buried in mud. Instead of a metal box looking object it is looks like a footlocker, which might be confusing.
 * A radiation suit case can be found in the Central sewers in the same room as the multiplas rifle.

Fallout 3
It will always carry one radiation suit in about one third repair.

Fallout: New Vegas
It may carry a normal radiation suit or an advanced radiation suit. They are usually in full condition.