Priority Victor-Alpha is a Starfleet designation for coded messages that dealt with the subject of Operation Vanguard. In 2268 after Starfleet Intelligence agents Bridget McLellan and Cervantes Quinn had deciphered the sensor logs from the Orion freighter Treana, they sent a Priority Victor-Alpha encoded message to the USS Endeavour with the coordinates to the wormhole. (VAN - Declassified novella: The Stars Look Down)