It's obviously designed to replave humans in dangerous armed response situations... hostage taking in particular..... when non-lethal force would be required by the HR team but they'd be taking live fire from terrorists, something like this:
"gentleman, we present the future of law enforcement"
dah dah, drum roll etc...
"After $3,000,000 of development, roboballer will now carry out a simulated hostage rescue"
"beeep, system active...proceeding to main lobby."
"beeep, target aquired, thermal imaging shows two targets, two non-hostiles"
"beeep, proceeding with caution, target locked"
"beeep, $~!+ stairs........mission failed"