Lessons learned in the missile complex
First Lt. Pamela Blanco-Coca, 319th Missile Squadron missile combat crew commander, closes the blast door underground at a Missile Alert Facility in the F.E. Warren Air Force Base, Wyo., missile complex Feb. 9, 2016. Heavy blast doors add to the survivability of the capsules and crews, in turn improving the ICBM force's deterrence capability. (U.S. Air Force photo by Senior Airman Jason Wiese)

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