Meet the LT2 F Bulldog Tactical Robot: a rugged robot with a 6-axis arm that can perform inspections and take on aggressive terrains. The robot can open doors, take on the stairs, remove suspicions packages, and even drive under cars (with arms removed).
The robot runs for up to 8 hours with a max speed of 140 feet per minute. The arm has a payload of 15+ when fully extended. SuperDroid Robots has more on this robot here.