KNTV NBC Nightly News With Lester Holt December 24, 2019 10:20:00
Them develop critical, new capabilities >> we're building the model, really, for a mission-ready package tunnel task force. it's never been done. >> here we go! >> hop on! >> reporter: one of the points of this exercise is to incorporate a different breathing technology instead of the normal 20-minute-or-so tank, they're wearing a device that allows them to spend not just minutes but hours on scene in the thick of it >> we're normally used to having, setting up in front of a building, where there's a collapse now we have to figure out a way in that long distance, 2,000, 3,000 feet into a tunne...
Source: archive.org