it means (you gotta see where you're going) Visual Flight Rules.
As someone with no military background, I was certain it stood for Visually Fucked Radar. LOL
- Even without a military background, many general aviation in the US and commercial freight/airline pilots worldwide understand what Visual Flight Rules are. VFR is a set of regulations under which a pilot operates an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. Generally, as a VFR pilot, you aren't allowed to fly into clouds, fog, or anything that would obscure your visibility (that would then be called IFR, or instrument flight rules, which means you're flying solely by looking at your flight instruments because looking outside won't help you). -Blemo