Yes, Scuba,at a depth of 90ft. in the molokai channel,the express took us almost a mile from the boat, and then at the top of a 200 ft. signal tower, I was repairing on the highest mountain on that island. I could sea for miles and smiles,,,Also in an underground (restricted access) military bunker,17 floors down,in a communications room,,,,,Crazeeeeeeeeee,,,( Formerly the "Hawaiian Lineman" ),,, ,,,,,,,,,,,,