skilled. >> today, lieutenant engle, one of space command's newly created defensive duty officers, watches his computer screens with the alertness of a sentry guarding a forward military outpost. skbl >> it takes a lot of vigilance, it takes us being focused and being ready every single day. >> we would absolutely be shocked if the u.s. military were not on a war footing now based on what we see. >> paul gratsani finds his team on the front lines of this new threat. >> there's no doubt that russia and china both have seen that this is a way that they could shift the odds in their favor. >> agi tracks some 10,000 commercial and military objects orbiting the earth. their visual rendering of satellites and debris as small as 4 inches across resembles a porch light swarming with