This past weekend I flew my bike from Oakland Airport back to McCarran Intl Airport in Las Vegas (where my house is..). When I got to Vegas, I was surprised to find that The Transportation Security Administration (TSA) opened the bike box and confiscated the following items: 1) Two C02 cartridges (for flat tires), 2) A bottle of T-9 Chain Oil 3) Spray lubricant for derailleurs, chain, etc. The odd thing is that I first flew it from Vegas to Oakland w/o incident or anything confiscated. Looks like different airports vary in their inspections of bike packages....Or perhaps the TSA Inspector was a cyclist and needed some free cartridges, oil, and lube! :-)