Granting employees of the U.S.Federal Government including the USPS the right to carry a legal personally owned and registered concealed weapon in the name of national security provided they can prove they have had proper training and have passed a fingerprint and back round check which is already required for employment.
This will provide an unpaid national force available to react to any terror threat they may encounter in all 50 states including the District of Columbia at no cost to the government.