The Mission and Installation Contracting Command (MICC), Fort McCoy, Wisconsin has a requirement for replacement of the HVAC at building 1679 on Fort McCoy, WI. Work to be performed will be within the North American Industry Classification System (NAICS) Code 238220 with a small business size standard of $19 million. The purpose of Amendment 0001 is to: (1) Answer contractor questions, (2) Update ATTACHMENT 3 to W911SA25BA003 ATTACHMENT 3 - BLDG 1679 100% DRAWINGS (UPDATED 2-13-25), (3) Add ATTACHMENT 7 - SITE VISIT SIGN-IN SHEET, (4) Extend the bid due date, and (5) Update the PUBLIC BID OPENING details in SUPPLEMENTAL INFORMATION.