Just ask Tommy Hook -- when he's able to talk again.
Mr Hook blew the whistle on waste and other financial abuses at Los Alamos lab. He was supposed to testify before Congress. He was lured to a meeting and beaten within an inch of his life. His wife says the attackers told him:
"If you know what's good for you, you'll keep your mouth shut."
His mouth is wired shut now, as his broken jaw heals.
This is the rising cost whistleblowers face. The feds are investigating a pair of deaths in Iraq -- contractors who tried blowing the whistle on scandals involving millions in taxpayer dollars.
When a criminal has to decide between going to jail -- or keeping millions of your dollars, killing a whistleblower seems to make some kind of twisted financial sense for them.