As Technology becomes way more sophsticated, this question is entirely licit. In recent times the Border Patrol has massively started to employ drones to control the borders with Mexico, monitoring the passage of illegal aliens and smugglers: " Hoping to help agents in the field, the Border Patrol is testing a fleet of personal drones, giving [...]
This post is intended to be a sort of "Tracker List" of some good books I've actually bought&found on Mantracking. The order is absolutely randomly and the update is steady.
"Recent high profile events around the country have illustrated the need for tactical tracking for law enforcement officers and agents. The murder of Park Ranger Margaret Anderson in Mt. Rainier National Park, Peter Keller’s murder of his family in Washington State, Aaron Bassler’s murder of a public official near Fort Bragg, Calif. and the recent [...]
"It generally comes as quite a surprise when people discover that there are still men who practice this ancient art with as much skill and frequency as did the early cowboy and Indian. These men not only track other human beings almost daily, but actually earn their living at it. The United States Border Patrol has been charged with the [...]
David Scott Donelan book on Tactical Tracking.