[jfp3]

Sometimes I try to put ships on "Sentry" that I don't want to move for a while and don't want to pay attention to....the Icon shows up...I select the units and it "blinks" when I click sentry like it's trying..but nothing happens...I originally thought it was ships low on fuel..but this is not always the case...what gives? Thanks in advance for your answers.

Looking forward to multi-player but I gotta know what I'm not doing right (in single player) and what might be a little bug before I start thrashing the experts...thanks