I just called the post office and found out that my LCAs were sent on 5/9 by Parcel Post and not by Priority Mail. Apparently the 5/16 estimated delivery date is only an "estimate" when shipped that way, but could take up to 14 days to arrive. I was told I should get it by 5/25. Unfortunately, I already got my vacation request approved for Friday to get the LCAs installed that can't be changed.
I wish I had suggested shipping by FedEx or UPS since it would get here much quicker. If it was shipped UPS today (5/18) it would arrive by Friday (5/20) at a cost of $23.48 (rather than the $24.61 I was charged). That is based on an estimated weight of 30 lbs., so it could have been either more or less.
I got a new gopro HD with a roll bar mount, LCD display, extra batteries and SDHC cards for this run. But I guess this trip isn't in the cards for me. So I am officially out unless the package arrives tomorrow.