QofTD - answer

Question was - When is a warthog called a bulldog and asked to be a guinea pig?

Answer - When the lead aircraft of a group of Fairchild-Republic A-10 Thunderbolts (affectionately, or not) known as the Warthog (or simply Hog) with the 354th FS (with the radio call sign of Bulldog) based out of Davis-Monthan AFB in Tucson is asked by Air Traffic Control to see if the weather has lifted enough for the visual approach into Navy North Island.