USA—Memorial Day Holiday Military Periscope | 05/21/2020 The editorial offices of Military Periscope will be closed on May 22 and May 25 for the Memorial Day holiday. We will be back on duty on May 26. Have a safe and happy holiday! Like what you're reading? Become a member. To become a member, please call 888-275-2264 or click here to request subscription information. If you are already a member, please log in to view this content.