I'm going to nominate Cris Carter for that honor. I'm frankly shocked that this New York Times article references his ownership of Carter Bros., however. It's rare that the sports section acknowledges a player's post-playing career. Of course, this - He owns a security company, Carter Brothers, based in Atlanta, and received an award for entrepreneurship from the National Urban League. - makes it seem like he's running a little old alarm company, or something. But, as you'll see in this story about Carter Bros. buying GE's Edwards installation arm, where I interviewed the other Carter brother, John, it's pretty dang substantial. I'm thinking for mainstream fame combined with security industry stature, Carter can't be beat. A close runner up might be Thomas McMillen, the former NBA star and congressman who heads Homeland Security Capital Corp., but a: his company is still smaller than Carter's, and b: Carter is on HBO.