6 photos that prove troops can sleep anywhere

The rigorous demands and stress of military service often lead to sleep deprivation.

Soldiers and sailors endure prolonged periods of training and operations — and they often get creative on where they drift off.

That's why they're skilled at sleeping where they can, when they can.

From torpedo rooms to tanks, aircraft to truck beds, here are some of the strangest and most uncomfortable places troops nod off.

Paratroopers catch some sleep after working through the night to prepare for an early morning combat jump in Italy.

(Photo by Lt. Col. John Hall/173rd Airborne Brigade)

Capt. Jesse Zimbauer, commanding officer of the submarine USS Indiana, gives an interview in the submarine's torpedo room.

(US Navy photo by Mass Communications Specialist 1st Class Jeffrey Richardson)

2. Torpedo rooms on US submarines.

Junior members of submarine crews are often required to "hot rack," where another crewmember sleeps in their bunk while they are on duty.

Sailors of the USS Indiana sleep in the boat's torpedo room while the ship is underway.

(US Navy photo by Mass Communications Specialist 1st Class Jeffrey Richardson)

US soldiers sleep during a flight home from Afghanistan on C-17 Globemaster.

(US Air Force photo by Staff Sgt. Jordan Castelan)

Soldiers sleep during cold weather gunnery training, where they had to use only sleeping bags for five nights in single-digit temperatures.

(Airmen1st Class Ariel Owings/325th Airborne Infantry Regiment)

Sailors assigned to USS Preble prepare to launch their rigid hulled inflatable boat off the boat deck.

(US Navy photo by Mass Communications Specialist 1st Class Bryan Niegel)

6. Small boat operations are extremely dangerous. But when they're not launching their boats, US sailors sometimes use them to catnap.

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