John Douglass sent in something he found while detailed over to DC Truck 15. This scuttle has a homebrewed method of being secured with 2×4’s. Regardless if you are opening this from the roof, or the interior, almost any hand tool should be able to defeat it. If this was a ghetto fabulous plywood skylight replacement that you were removing from the roof, it might give some unexpected resistance. But the nails or screws that are holding it together would more than likely be the weak point, and pull right through the plywood. When removing from below, a quick strike from a hook or halligan should do the trick. Even when operating on a “nothing call” like a fire alarm, it is essential to be ready for anything and be prepared with tools in hand. It would certainly be embarrassing to encounter this and have to head back out to the rig to retrieve a tool to defeat it.