others, and killed two other innocent people, and the real problem here is not just the weather, but also just the mountainous terrain over which the teams that are being brought in actually have to deal w is -e to the sheriff and the described the territory we re in and exactly how the search is going underway. take a listen. about eight square miles is what we re searching. about 200 empty cab bens we re cabins we re checking, using the s.w.a.t. guys, the snow cats and atvs with chains to get to those areas. we re methodically searching each building. reporter: and the search for chris dorner continues. no idea whether he really is still on the mountain or indeed when they may find him but the authorities saying they are not going to give up until they know
border, stretches 4000 miles, and most of it is wide open, no fences, no gates, no nothing. that creates a huge challenge for the border patrol. rick leventhal is streaming to us live from the border patrol station in mecina, new york. rick. reporter: jon, a recent general accounting office study found less than 1 percent of those 4000 miles were at an acceptable security level in 2010, but they do face a significant challenge up here, including the fact that the northern border is more than twice as long as the southern border, but they have about 1/10 as many border agents to secure it. plus the terrain is so rough and rugged that they can t patrol it using traditional methods, so yesterday the feds showed us what they do. they took us out on snow cats for an exclusive ride-along along the santa lawrence river, which is frozen over and divides new york from canada. this region and this
reporter: less than 1% of those 4,000 miles are at an acceptable level. and the border patrol only knew about illegal crossing on 25% of those 4,000 miles. they say they face a lot of challenges including the fact that the northern bored is twice as long as the southern border, and they only have 1/10 as many agents to patrol the border and the conditions are harsh and unforgiving. yesterday we went along on a ride along on snow cats. it runs along several islands that are part of the st. regis mohawk tribal territory. this 10-mile stretch of mohawk land serves as a major drug smuggling route. 20% of canada s high-grade marijuana is funneled through