President Obama is unveiling his plan to close Guantanamo Bay - here's what it's like for US troops stationed there

On Tuesday morning, President Obama is expected to deliver an address about his plan to fulfill his campaign promise of closing Guantanamo Bay.

A total of 91 detainees still remain at the detention facility at the military base. The holding of the prisoners, in conjunction with operating costs, runs the US close to $180 million a year in operating costs. But beyond the debate over holding detainees at the base and the cost of the facility, life at Guantanamo is anything but perfect for the US military personnel based there.

Troops feel isolated, with no civilian cell phone towers and barely adequate bandwidth for video chat. They face severe restrictions on social media and are prohibited from talking about much of their work. It doesn't help that their work is so little understood back home.

The military offers recreation, entertainment and a lot of physical training to keep morale high. It can only do so much.

For a closer look at troop life at GTMO, check out our exclusive photos below.