1 00:00:05,551 --> 00:00:07,867 >> One of the most important things an agent learns to do 2 00:00:07,867 --> 00:00:10,273 in the Border Patrol is to track and ###make signs. 3 00:00:10,273 --> 00:00:12,650 On the Southern border, dirt's there all the time. 4 00:00:12,650 --> 00:00:14,408 They cross over the border, you track it. 5 00:00:14,408 --> 00:00:16,169 And there's ways to tell the age of it. 6 00:00:16,169 --> 00:00:17,960 On the Northern border, the terrain is different. 7 00:00:17,960 --> 00:00:20,274 There's, you know, there's trees, there's leaves on the ground, 8 00:00:20,274 --> 00:00:24,439 all sorts of different effects, stuff that affects how signs left. 9 00:00:24,439 --> 00:00:26,784 When the snow falls, it makes it easier for us 10 00:00:26,784 --> 00:00:28,544 because we can actually see the sign. 11 00:00:28,544 --> 00:00:31,567 And you can age it, because if you see a sign today 12 00:00:31,567 --> 00:00:34,653 and it hasn't snowed in a while, you know it's within a few days. 13 00:00:34,653 --> 00:00:36,845 But if it snowed recently and it's real fresh, 14 00:00:36,845 --> 00:00:40,388 you know it's within the last snowfall. 15 00:00:40,388 --> 00:00:41,035 16 00:00:41,035 --> 00:00:41,253 17 00:00:41,253 --> 00:00:41,532 18 00:00:41,532 --> 00:00:41,622