Subject: File No. S7-21-09
From: William A. Thayer
Affiliation: retired Certified Financial Planner

November 17, 2009

I strongly support the SEC effort to ban flash orders. Flash orders are simply unfair. I will never see a flash order while some properly equipped short term trader will. I want a market that is fair to all vs. a market that is advantageous to the few with super fast computers.