DENVER (CBS4) — Two Black Hawk helicopters landed in downtown Denver Tuesday afternoon.

(credit; CBS)

One landed on the grass between the Denver Center for the Performing Arts and Speer Boulevard.

READ MORE: Colorado State Trooper Hit On I-70: 'This Has To Stop'

(credit; CBS)

The helicopters were transporting survey teams to perform site visits for the Colorado Convention Center and other alternate care sites. Mayor Michael Hancock and Gov. Jared Polis were expected to join the survey team, which includes U.S. Army Lieutenant General Todd Semonite, Commanding General and 54th U.S. Army Chief of Engineers.

READ MORE: More Law Enforcement Agencies, Businesses Accepting Colorado Digital ID

(credit; CBS)

The helicopters arrived around 2:30 p.m.

MORE NEWS: Gabriel Samora Accused Of Shooting 2 People Near Denver's Capitol Hill Neighborhood

RELATED: Latest Updates On The Coronavirus Outbreak In Colorado