Body scanners coming to trains... subways... boats... ??

Brace yourselves, commuters — body scanners may be coming to trains, subways and boats, according to Homeland Security Secretary Janet Napolitano.

“[Terrorists] are going to continue to probe the system and try to find a way through,” Napolitano said in an interview that aired Monday night on “Charlie Rose.” She said as aviation security tightens, “we have to also be thinking now about going on to mass transit or to trains or maritime.”

To be fair, she didn't specify that scanners would be the method of security for those modes of transportation.  But it's all security theater, and it's ridiculously impractical, frankly ineffective, and ludicrously expensive.

When will someone in charge have the balls to stand up and say "stop this nonsense?"