When is the 366th Medical Group closed? Sign up to find out! Published Feb. 19, 2015 By Staff Reports 366th Medical Group MOUNTAIN HOME AIR FORCE BASE, Idaho -- Have you ever arrived at the 366th Medical Group to realize they were closed? Frustrated about taking time off work to pick up a prescription and the hospital was closed? Well, the 366th Medical Group created a new system to help prevent this and alert you of future hospital closures. Gunfighters are encouraged to sign up for 366th Medical Group announcements by subscribing to 366MDGmedalert, a 'Twitter'-based alert system managed by the 366th Medical Group. The alerts are sent directly to your phone via text message. Follow these instructions to sign up: 1.) Text: "Follow @366MDGmedalert" to 40404 (be sure to include a space between follow and the @ sign) 2.) Wait for a confirmation text. 3.) Text: "set discovery off" to 40404 to avoid unwanted texts and spam messages.