colonel matthew tucker says the military's ability to operate here shouldn't be taken as a threat. >> we have a series of operations that we conduct throughout the year, focused on demonstrating our ability to rapidly deploy, gaining domain awareness, ensure we know and understand what our adversaries are doing in the region, what our competitors are doing in the region. and then preparing our capability. >> reporter: linsey, these troops are working day and night, not only to protect the nation, but also to provide critical oversight on those russian and chinese forces. as all three countries look to exploit the opportunities in the arctic. linsey? >> linsey: certainly an uptick in activity there. stephanie, thank you. >>> next tonight, tomorrow is black friday, one of the busiest days of the holiday shopping season, which is shorter this year. and so far, all signs are pointing to shoppers spending more money, even though many are still carrying debt from last year. more now from abc's melissa adan. >> reporter: tonight, the holiday shopping season is heating up, and despite widespr