recently he began the process of dropping out of the program, for reasons we don't know. why did he do what he did? nbc's mike taibbi looks into that. >> reporter: the few people who had any contact with james eagan holmes in his aurora neighborhood describe him as not just quiet wus a recluse who lived with the shades drawn and when he did meet someone revealed is little. >> he kept doing so, didn't like a lot of attention. >> never heard anything abnormal until this morning when we heard loud techno music playing. >> reporter: witnesses said the suspect hb no message at all. >> he didn't say a word. not a word. >> reporter: but he was dressed in full battle gear. >> he was wearing a ballistic helmet and tactical ballistic vest. ballistic leggings and a groin protector and a gas mask and black tactical gloves. >> looks like a deranged individual. he had his hair painted red.