was a charity runner for the alzheim alzheimer s association. we started at 10:40 a.m., and i finished my first under four. hi pushed pretty hard in mile 25 and 26, what that means i was winded and dizzy, i was ready to faint. as i crossed the finish line one i asked for medical assistance, a wheelchair, i heard your reporter say, typical post marathon, to give, if you will, a little tlc. i m near mass general myself, another ambulance. i was in the tent, i think it was approximately eight minutes after i had crossed. so close to 2:40 p.m. that i heard an explosion, i was laying on a cot, getting my blood pressure taken, my initial question, was that thunder? it was a beautiful day in boston. i didn t think that was the