pacplayer
but clearly it sucked it through the aft pressure bulkhead of the lower forward cargo compartment
There is no lower FWD cargo compartment aft pressure bulkhead on the 747. There is a ziplocked neoprene curtain which reveals the cargo fire bottles and the potable water tanks if you un-zippit. The FWD, AFT and BULK cargo compartments are all within the same pressure vessel as the cabin.