TIER 2+ Global Hawk is a very large UAV. As its name suggests, it has an extremely long range of approximately 12,500 miles with an endurance of 40hrs. The Global Hawk can travel 3000 miles, survey a state the size of Illinois and then travel another 3000 miles back to its home base.
Global Hawk landing at Edwards AFB. Image source: AFFTC
Global Hawk sitting on the ramp at Edwards AFB. The aircraft is over 40ft long. Image source: AFFTC