I still describe clear, crisp autumn days as "September 11 Sky." I think everyone on the East Coast remembers how clear and fresh the air was that day... until.
From my spot in the DC suburbs I watched the day unfold on TV. I heard repeatedly how all aircraft were grounded. Then I walked outside to pick my daughter up from school and heard the constant hum of fighter jets patrolling. The sky was still blue but I realized how close we were to danger and that our country's future and everything else was unclear.