Flowers float in the reflecting pool outside City Hall during the city's 9-11 Tenth Anniversary Commemoration in Hermann Square Friday, Sept. 9, 2011, in Houston. Mayor Annise Parker joined others in a ceremony in front of the reflection pool at City Hall to honor those to lost their lives in the Sept. 11, 2001, attacks on the United States. less

Flowers float in the reflecting pool outside City Hall during the city's 9-11 Tenth Anniversary Commemoration in Hermann Square Friday, Sept. 9, 2011, in Houston. Mayor Annise Parker joined others in a ceremony ... more

Retired Army chaplain Col. John Price tosses a pair of flowers into the reflecting pond outside City Hall during the city's 9-11 Tenth Anniversary Commemoration in Hermann Square Friday, Sept. 9, 2011, in Houston. less

Retired Army chaplain Col. John Price tosses a pair of flowers into the reflecting pond outside City Hall during the city's 9-11 Tenth Anniversary Commemoration in Hermann Square Friday, Sept. 9, 2011, in ... more