It's a sad world...
I usually have on my person a folding hacksaw by Allway Tools, it has two blades, one for wood & one for metal.
http://ladybug24963.homestead.com/files/fldghsaw.jpgI also have a slim carton cutter in my PSK, because it is slim,doesn't take up much room, and safer than trying to hold a bare razor.
http://www.officedepot.com/ddSKU.do?level=SK&id=946210I will be adding a Pocketwrench II to my EDC in a few days.
I don't fly. <img src="images/graemlins/grin.gif" alt="" />