- US Secret Service (Washington, DC)
- …loss as measured by an audiometer must not exceed 25 decibels (ASA or equivalent ISO ) in either ear in the 500,1000 and 2000Hz ranges. The Department of Homeland ... Security is calling on those who want to help protect American interests and secure our Nation. DHS Components work collectively to prevent terrorism; secure borders and our transportation systems; protect the President and other dignitaries; enforce and… more