it's a free concert, and an event keith nevitt says he's been coming to every year for the past 17 years.keith nevitt/fan- "we call it the happiest day of the year out here."nats- during the course of the three-day event... organizers expect a half million people to attend.molly allen/fan- "everybody is really happy and very welcoming."haley berkoe/fan- "the weather is really nice today -- it's a beautiful day in san francisco and it's fleet week. so, its really good energy today." and, in light of what happened in las vegas... we asked visitors if they felt comfortable coming here to the festival... and, many said that the tragedy was certainly on their mind.keith nevitt/fan- "not hesitant, i mean, i think you gotta keep doing what you're doing. it's a great time. i think, you know, maybe you take a few extra thoughts and looks over there. but i think this shows how great people are and how great it could be to be together with others. (philippe) you feel safe? (keith) oh yeah."dennis juarez/organizer- "i feel 100- percent confident that people are safe."nats- in addi

it's a free concert, and an event keith nevitt says he's been coming to every year for the past 17 years.keitht/fan- "we call it the happiest day of the year out here."nats- during the course of the three-day event... organizers expect a half million people to attend.molly allen/fan- "everybody is really happy and very welcoming."haley berkoe/fan- "the weather is really nice today -- it's a beautiful day in san francisco and it's fleet week. so, its really good energy today." and, in light of what happened in las vegas... we asked visitors if they felt comfortable coming here to the festival... and, many said that the tragedy was certainly on their mind.keith nevitt/fan- "not hesitant, i mean, i think you gotta keep doing what you're doing. it's a great time. i think, you know, maybe you take a few extra thoughts and looks over there. but i think this shows how great people are and how great it could be to be together with others. (philippe) you feel safe? (keith) oh yeah."dennis juarez/organizer- "i feel 100- percent confident that people are safe."nats- in addition t