As a retired Military Officer and as a member of many Congressional and Senatorial Selection Committees over the years, I can tell you that there are plusses and minuses to wearing the uniform but above all else, IF you decide to wear it, it has to be PERFECT. Clean, pressed, devices and decorations, clean and in the correct place. You might have a uniform that does not fit correctly and that will not reflect well on you. Either do the uniform RIGHT or don't wear it to the interview and instead wear a suit and tie (male) or nice dress (female).