Since it makes military systems, it is a government contractor.

The contractor may not charge the time off to the government contract

Monies are transferred from the US treasury or other governmental agencies to a contractor when a non-governmental contractor performs work under contract with the government. This is the government's way of paying the contractor for work.

social security administration-government agency

U.S. Postal Service-government corporation

Boeing-government contractor

Contractor personnel may attend a government office picnic, so long as the time spent attending the event is not charged to the government.