First he's only one person to several thousand missing people. The guys from Metro, Shawn Hornbeck, Laura Recovery and a great many other SAR and K9 units would love nothing better to find everyone who's missing.

Second like he said in the news clip there has to be a scent to follow. Scent is a fickle thing, it can be covered up by something more powerful, washed out by rain, automobile exaust and rubber from the tires can do searious damage to a scent trail. Or if it's just a high traffice area the scent can be quickly burried.

Some of these dogs can do amazing things, but they, like their handlers, have to work with what their given. Or, that big bad nasty we keep running into, Funding. Training and certification isn't cheap and most of the time that money isn't donated, it all comes out of the handlers pocket. While we'd all love to track and trail until everyone is found, alot of times finances prohibit it. The dogs can't really focus on what their doing if their handler can't keep them in kibble.