Law Enforcement Officers Safety Act Improvements Act of 2009 - Amends the federal criminal code to: (1) expand the definition of "law enforcement officers," for purposes of provisions authorizing such officers to carry concealed weapons, to include current and retired law enforcement officers of the Amtrak Police Department, the Federal Reserve System, the executive branch, and the Armed Forces; (2) allow law enforcement officers who are retired or who separated in good standing after at least ten years of service to carry a concealed weapon; and (3) expand the categories of law enforcement officers authorized to possess a fireman in a school zone to include retired law enforcement officers.