peter taylor has been given rare and extensive access to film inside guantaunmo bay. here is his special report. >> within days of taking office president obama promised to close guantaunmo and with it a chapter of american history. >> the process whereby guantaunmo will be closed no later than one year from now. >> but more than two years later there are around 170 detainees held without trial, many al qaeda's hardcore. some have been ill treated in the past. we were only allowed to film a few and forbidden to show their faces. >> well, we have been with these guys for nine years. we know who we picked off the battlefield. we know what type of guys they are as far as compliant and not compliant. just because they are compliant does not mean their ideology has not changed. they want to kill our guards and want to disrupt our organization. they are still in the fight. >> president obama pledged to try many of the detainees in civilian courts in america but proved almost impossible. much of the evidence obtained through torture and ill treatment is likely to be thrown o