It’s becoming pretty clear why the Baltimore Ravens didn’t sign Colin Kaepernick last summer. Ravens coach John Harbaugh sought advice from some “trusted friends” during the 2017 offseason while considering whether to add Kaepernick — at least one of which was a “high-ranking U.S. military official,” TMZ Sports reported Monday. According to TMZ Sports, the official basically advised Harbaugh not to sign Kaepernick because of the quarterback’s decision to kneel during the national anthem out of protest. The official told Harbaugh to “seriously consider if Colin’s national anthem demonstration fell in line with the team’s core values,” per TMZ Sports, and while not outright telling Harbaugh to avoid Kaepernick, advised that the coach “give Colin a set of specific guidelines he needed to follow if he wanted to keep his job.”