.... The event was paid for mostly by the Department of Homeland Security, but more than 100 corporations threw in money too, up to $25,000 each. In many of the scenarios, teams would try out the latest equipment on offer from Urban Shield's corporate sponsors—Verizon, Motorola, SIG Sauer. Many were military supply companies—FirstSpear, for example, was founded by former soldiers to make body armor and bandoliers for "US and allied warfighters." Here, they sold their stuff to cops. Then there were "platinum sponsors" like Uber, which gave police discount black-car rides for the weekend....