Hamish Harding's stepson is using Blink-182 to "cope" as the British billionaire remains missing on the small vessel carrying five people that vanished two days earlier in a dive to the Titanic wreckage site."My stepdad Hamish is on this submarine lost at sea," Brian Szasz tweeted at Blink-182 members Travis Barker, Tom DeLonge and Mark Hoppus on Monday. "I'm devastated but coming to the San Diego show tonight so you guys can give me hope and cheer me up." Tap here to read the most awkward thing I think I've ever seen. @hookerandbd