Dogs trained to detect explosives could reduce the need for the Transportation Security Administration's new pat-down procedure and improve airport security, some experts say. "Dogs would be a wonderful solution," says Jeffrey Price of Denver-based security consulting firm Leading Edge Strategies. "They're much friendlier than some of the current processes -- and yet, if you're hiding something, the last thing you want to see is a dog." TSA says more than 750 "certified explosive detection canine teams are deployed to mass transit systems, airports and cargo facilities." But the dogs are not approved for passenger screening due to concerns about costs and passenger objections.