s/Secret Service Special Agents/American hijackers/ s/U.S. government employees/Americans/ We therefore conclude that "Some Americans are American hijackers."

s/Secret Service Special Agents/American hijackers/ s/U.S. government employees/Americans/ We therefore conclude that "Some Americans are American hijackers." The logic's airtight; it comes from a secret service test designed to evaluate logic ability. Suddenly the TSA makes sense.