Senator Dianne Feinstein apparently never heard the old World War II slogan, "Loose lips sink ships":  

A senior U.S. lawmaker said Thursday that unmanned CIA Predator aircraft operating in Pakistan are flown from an air base in that country, a revelation likely to embarrass the Pakistani government and complicate its counter-terrorism collaboration with the United States.

The disclosure by Sen. Dianne Feinstein (D-Calif.), chairwoman of the Senate Intelligence Committee, marked the first time a U.S. official had publicly commented on where the Predator aircraft patrolling Pakistan take off and land.