Firefighters and police officers in the city of Roseville will be honoring their fallen brothers and sisters Thursday. In a special tribute to the brave souls who lost their lives on Sept. 11, 2001, the Roseville Fire and Police Departments will be participating in a unique exercise. Beginning at 7:15 a.m., firefighters will begin climbing the stairs in the six-story tower at the Roseville Fire Training Center at 2030 Hilltop Circle. The stairwell climb is symbolic of the final climb many public safety personnel made up the World Trade Center North and South Tower stairwells prior to the final devastating collapse of both buildings. Once at the top of the fire training tower, each individual will ring a bell and a name will be called in memory of a fallen comrade. A total 414 trips will be dedicated to the firefighters and police officers lost their lives in the attack on the World Trade Center. Additionally, there will be a short flag ceremony at each of the eight Roseville fire stations at 10:28 a.m., the precise time the North Tower at the World Trade Center collapsed. Firefighters wearing dress uniforms will pay a final tribute and lower flags to half mast.