[LurkedLongEnough]

Check this out from FAA's temporary flight restrictions :

OFFICE OF THE PRESIDENT OF THE UNITED STATES
Effective: 06/01/2004 22:35 - 06/02/2004 15:40
State: CO
Facility: ZDV - DENVER (ARTCC),CO.
Type: VIP
Description: DENVER, COLORADO JUNE 1-2, 2004.

[BulletBobCo]

That TFR is SOP for any destination that the POTUS is going to visit. That one is for the graduation at the Air Force Academy.