The 11th Civil Engineer Squadron hosted the Snow Parade in order to recognize vital snow preparation efforts in support of the presidential and alert missions at Joint Base Andrews, Md., Dec. 4, 2015. (U.S. Air Force photo/ Senior Airman Nesha Humes/ released)

Airman 1st Class Mark Guarnio, 11th Civil Engineer Squadron heavy equipment operator, briefs snow removal operations during the 11th CES’s Snow Parade, Dec. 4, 2015 at Joint Base Andrews, Md. The parade was held to recognize some of the key mission-essential workers during the snow removal season. (U.S. Air Force photo/ Senior Airman Nesha Humes/ released)

Joint Base Andrews commanders listen to a snow removal operations brief during the 11th Civil Engineer Squadron’s Snow Parade at Joint Base Andrews, Md., Dec. 4, 2015. The parade was held to recognize some of the key mission-essential workers during the snow removal season. (U.S. Air Force photo/ Senior Airman Nesha Humes/ released)

The 11th Civil Engineer Squadron’s snow removal vehicles drive around base during the Snow Parade at Joint Base Andrews, Md., Dec. 4, 2015. The event was held to recognize vital snow preparation efforts in support of the presidential and alert missions at JBA. (U.S. Air Force photo/ Senior Airman Nesha Humes/ released)