CIA Agent Confesses On Deathbed: ‘We Blew Up WTC7 On 9/11’.

[guohua]

Lets see, this man is 79-80 years old, that means when 9-11 happened he was 63-64 years old ( hope my maths is right). He is a bit old to be in the front line I think.

You ARE Absolutely correct, the Mandatory retirement age is 55 to 57 years old for all weaponized government employees.
He also would not have carried (been read-on) his security clearance (unless fieldwork or case manager work as my husband) my husband doesn't recognize him. 
After retiring from his analyses or overseas courier agency job, he would have been Read Off his Clearance and not had a new background check done, which is every Five Years to keep your clearance. 

Just a side note, my husband was still working at the time of 9/11.
My husband never heard of any inside agency talk of a Sanctioned Government Involvement, what was mentioned is this, Field Agents in Afghanistan, Pakistan and working in Qatar, Dubai and other Arab areas warned the Powers Incharge that there was Plans to attack America.

I've rambled enough, sorry.