I was a volunteer role player for the SEALs for 11 years. We were bound by the strictest orders not to ever discuss what went on during training. We also had non-disclosure statements signed for "special" circumstances with all types of special ops units such as SEALs, Rangers, Special Forces, and Air Force Pararescue.
Remember the 4-barrel night vision goggles you first saw in the movie "Zero Dark Thirty". The SEALs were testing them I had the chance to wear them 2 years before anyone knew they existed. Of course I could not tell anyone anything about them.