Shoot, I'm staying with FedEx. First, it's only a few bucks more ($6-7 for second day air), and for that, you also get affirmative tracking, and about zero chance of delay or loss. Second, you don't get grilled about whether it's safe or not by a clerk who's pre-convinced that you're trying to poison him (hey, it's black liquid, not white powder -- duh). Other than a jug of cultured Ebola virus or an ex-Soviet nuclear warhead, FedEx can and will handle it. And finally, FedEx was founded by a Marine, and about a dozen of my friends fly for them, so I like using the service. Of course, I'm not pitching the service or anything like that...
![[Cheers!]](/forums/graemlins/cheers.gif)