The insurgents were found to have explosives strapped to them , hand grenades and train tickets to moscow , officials said .
官员说,这些叛军的身上绑着炸药和手榴弹,还带着前往莫斯科的火车票。
When subjects in a new study strapped on virtual reality helmets , half of them were given the ability to fly around a simulated city , while the others sat passively in helicopters .