Australia’s new submarines based on US tech may not be in operation until the late 2030s. So, we'll be on Mars before then. The U.S that is. You and me? We'll be doing a dirt nap. And, left unasked, in what ocean is a diesel powered sub safe from quieter killer subs and from depth charges? Chinese sonar operator, ripping his earphones off: WTF is that noise?! Are the Aussies laying some cable on the ocean floor?