Can the United Postal Service put their parcels going to Europe on UPS,FedEx or DHL plaines?

Can the United Postal Service put their parcels going to Europe on UPS,FedEx or DHL planes? Someone told me they could. Is this true?Could the package I mailed made it out of the US before 12 noon Saturday? See below!



I mailed a package to Ukraine and I'm concerned it will get damaged from the rain if Hurricane Irene causing flooding at JFK. I know all flights were canceled at 12 noon Saturday. Are there any flights to Ukraine or Europe before noon Saturday? How does the postal service keep mail and packages from getting wet? Also,why was my package sitting so long in Jamaica (from 12:01 PM Friday to 10:01 AM Saturday? It seems like it should have made it on a flight on Friday night! Also,will it fly directly to Ukraine or will it fly to another country first? Any help will be nice. Please list how you got this information! Please see below!



LC020800075US

Your item was processed through and left our JAMAICA, NY 11430 facility on August 27, 2011 at 10:07 am. The item is currently in transit to the destination. Information, if available, is updated periodically throughout the day. Please check again later.

First-Class Mail International

Processed through Sort Facility

August 27, 2011, 10:07 am

JAMAICA, NY 11430

International Letter

Processed through Sort Facility

August 26, 2011, 12:01 pm

JAMAICA, NY 11430

Acceptance

August 19, 2011, 4:57 pm

LILBURN, GA 30047Can the United Postal Service put their parcels going to Europe on UPS,FedEx or DHL plaines?
Around 80% of all mail in the US is flown via Fedex, Fedex flies their stuff at night, and the post office by day. There's a good chance that not only will Fedex fly your package to Europe but if you used express with the post office Fedex might also deliver it.Can the United Postal Service put their parcels going to Europe on UPS,FedEx or DHL plaines?
Not just those but commercial airlines tooCan the United Postal Service put their parcels going to Europe on UPS,FedEx or DHL plaines?
they already do that with some packages