Grumpy Scot

Corrected entry: After Black Widow hacked the security database at the end of the movie and uploaded everyone's identity for the world to see, Redford then chose to use his phone to zap almost everyone dead in the room using the electric charge that looked like electrical device cards in their shirt pockets. Robert said he previously put the devices on the outfits. Since Nick and Black Widow were the only survivors of the zapping, that stopped Nick Fury and Black Widow from forcing Redford to surrender. Robert Redford could have used that strategy while Black Widow was overtaking the database even before Nick Fury arrived.