Two Russians (Khalin and Mikhailloff) and an American engineer (Earl Lyons) find a way to step outside of time, view the future, then step back into time at the very point that they left, thereby preventing bad things such as Mikhailloff’s murder (in “When Time Stood Still,” Amazing, Feb 1935) and an insult that’s intended to start a war (“The Time Control,” Amazing, Dec 1936).