Denny Dalliance had long worried about what would happen if he fathered a child because his job as a truck driver keeps him away from home most of the week. But after the U.S. Supreme Court overturned Roe v. Wade in June, the 31-year-old Independence, Missouri, man decided it was time to take action — and jumped at the chance to sign up for a free vasectomy. “These are grim circumstances under which I made this decision,” he said as he drove a load of cardboard boxes through Kansas this week. The vasectomy he is scheduled to get next month is part of an effort that involves Planned Parenthood and a physician with a mobile vasectomy clinic.