Turnagain Arm Alaska, a top 20 scenic American roadway. Alaska Railroad passenger train rumbling north. We’re cruising south. It’s 10:50 AM Sunday. With windows lowered and arms frantically waving toward the approaching engine, hoping for an engineer’s response. Three Sundays in a row.Three rumblings. Three frantic wavings…and…three train toots from the train’s engineer. Thank you, Mr. Engineer.