dr. brad colfax. [cheering and applauding] >> well, good morning, everybody. isn't the fog great? [laughter] >> after spending the summer in d.c., i can say i will never, ever be critical of fog again. [laughter] >> and as many of you know, i had the privilege before going to the office of national aids policy in d.c. to work for the health department for 15 years under barbara's inspirational leadership and susan's incredible mentor ship and supervision. it's just been fantastic to go to d.c. and realize what incredible history and progress san francisco has and continues to make and help guide us at the national level in terms of the epidemic. today the celebration of bridge research is just another step forward, a huge step forward in the city's remarkable leadership at the local, national, and international level in hiv prevention care and treatment. and the bridge research team, the history has just been remarkable in terms from the early days of the epidemic, in terms of the natural history of the disease, vaccine research, prevention measures, prophylaxis, treatment, testin