CTU Denver

CTU Denver was a Domestic Unit of the Counter Terrorism Unit. The unit was based Denver, Colorado.

Day 3
During Day 3, CTU Las Vegas secured a vial of the Cordilla Virus. The courier of the virus was shot whilst making a phone call.

AS with CTU Seattle, CTU Las Vegas and CTU Phoenix, it is assumed that CTU Las Vegas found the vial of the virus but no-one actually said that a CTU branch found it. Again, Las Vegas is quite a large city so it is assumed they would have a Domestic Unit.