WATCH: Test-firing rocket engines at Ursa Major
The Denver Gazette was unhand Friday in Berthoud, Colo., to watch as Ursa Major test-fired two rocket engines. (Video by Dennis Huspeni/Denver Gazette)

The Denver Gazette was unhand Friday in Berthoud, Colo., to watch as Ursa Major test-fired two rocket engines. (Video by Dennis Huspeni/Denver Gazette)