Hostage rescue is one of the most dangerous missions special operations troops can be assigned to.
One of the big reasons: You have to pull your punches, lest you accidentally kill the people you're there to rescue. You have to be very stealthy, or you will be detected and the bad guys will kill the hostages. You must move quickly, or the bad guys will kill the hostages.
But it's hard to find people who want to be in the middle of training for hostage rescue. The answer, according to one DoD release, may be to use robots.
Explosive Ordnance Disposal technicians with the 27th Special Operations Wing conducted some hostage rescue training using the robots this past December – and some of it was caught on video: