CBP agents fire 72 rounds of handgun ammo per qualification. Multiply that by 20,000 and you get 1,440,000. For the four quals each year you arrive at 5,760,000 rounds of handgun ammo for CBP alone. This does not include issue of ammo for practice and proficiency.
The Bureau has approximately 37,700 highly motivated individuals working in 115 correctional institutions across the country, and approximately 217,000 Federal offenders are confined by BOP.”