Mark Kelly had a grand plan to make a political point about gun control. Now, that plan is thwarted. The former astronaut and husband of Rep. Gabby Giffords purchased an AR-15—which he didn’t plan on keeping—earlier this month to prove how easy it is to buy an assault weapon. After the purchase, he planned to turn the gun over to the police. After learning of Kelly’s plans, the store owner has now canceled the transaction. Since his statements made it clear that the purchase was for reasons other than personal use, “I determined that it was in my company's best interest to terminate this transaction,” store owner Doug MacKinlay said.