In desperation, Erik reached out o them - exhibiting his developing telepathic mind and its mutant powers - the power of magnetism with the ability to manipulate metal.Despite the stern warnings, Dulles communications director Leslie Barnes (Art Evans) plotted to use the newly-installed communication transmitters at the unfinished Annex Skywalk to try to re-establish air traffic communications with the delayed, incoming planes.Mutt, Indiana, Marion, and Oxley escaped into the jungle, where they encountered quicksand, and as Marion and Indy sank, he learned that Mutt""s real-name was Henry Jones III - Mutt was his own biological son!They were recaptured when Oxley went to get "help," although they were able to escape from a transport truck in the jungle, followed by an exciting and spectacular chase sequence, including a sword fight atop side-by-side moving vehicles between Mutt and Dr.The dread minion of the Law - Reuben ""Rube"" Whipple (George Neville) is the Constable.Another townsperson Seth Holcomb (Porter Strong) waits for Martha Perkins (Vivia Ogden), whom he has been following around for twenty years.Spock and Bones and other main crew members were able to evacuate and eject themselves in various spacecraft modules-crafts and escape pods.