Still learnin' and studyin' here. Someone e'splain to me how an airport can be both a Class C and a Class D at the same time. Or am I reading the sectional incorrectly? There's a reference to NOTAMs on the chart; do they actually declare themselves a "C" or "D" at different times? Hmmm. EDIT: sorry, for those who don't know -- this is KSSC, Shaw Air Force Base, Sumter, SC.