FVXX27 KNES 152001 VA ADVISORY DTG: 20161115/2001Z VAAC: WASHINGTON VOLCANO: USER MESSAGE PSN: XX AREA: XX RMK: THE 557TH WEATHER WING IS ISSUING THIS MESSAGE ON BEHALF OF THE WASHINGTON VAAC. 557 WW AND THE WASHINGTON VAAC ARE CONDUCTING A COORDINATED OPERATIONAL BACKUP TEST FROM 15/2000Z - 15/2300Z. PLEASE BE AWARE THAT 557 WW WILL ISSUE ANY NECESSARY VOLCANIC ASH ADVISORIES ON BEHALF OF THE WASHINGTON VAAC DURING THIS TIME FRAME.