Guards at the Guantánamo Bay military prison have intensified their crackdown on a hunger strike by detainees. The Pentagon says guards fired “non-lethal” rounds at prisoners on Saturday after trying to move them into isolated, one-man cells. At least one prisoner was hit with a rubber-coated bullet. The military claims it took action after prisoners covered windows and surveillance cameras. It also says prisoners used “improvised weapons” to resist the guards’ sweep. Defense attorneys say most of the prison’s 166 detainees are now taking part in the hunger strike two months after it began. At least 11 prisoners are being force-fed through nasal tubes. The latest unrest came one day after the International Committee of the Red Cross wrapped up a three-week visit to assess the prisoners’ treatment.