"We don't expect to see a problem, but we're prepared if there is," Cmdr. Hide Caption 3 of 21 Photos: Celebrating 420 21 photos Celebrating 420 – Partygoers listen to live music and smoke pot at Denver's 420 Rally on April 20. The two-day festival, which is expected to draw tens of thousands of people,... (Associated Press) 
 
 With the Colorado state capitol building visible in the background, partygoers dance and smoke pot on the first of two days at the annual 4/20 marijuana festival in Denver, Saturday April 19, 2014. The two-day festival, which is expected to draw tens of thousands of people,... (Associated Press) 
 
 CORRECTS TO 4/20 MARIJUANA FESTIVAL -Police officers mounted on bikes patrol Civic Center Park on the first of two days at the 4/20 marijuana festival at Civic Center Park in Denver, Saturday April 19,... (Associated Press) 
 
 With the Colorado state capitol building visible in the background, partygoers dance to live music and smoke pot on the first of two days at the annual 4/20 marijuana festival in Denver, Saturday April... (Associated Press) 
 
 Tens of thousands gathered for a weekend of Colorado cannabis-themed festivals and entertainment, from a marijuana industry expo called the Cannabis Cup at a trade center north of downtown, to 4/20-themed concerts at the legendary Red Rocks Amphitheater — acts include Slightly Stoopid and Snoop Dogg — to a massive festival in the shadow of the state capitol where clouds of cannabis smoke are expected to waft at 4:20 p.m. MDT Sunday. That said, for many of those who turned out Saturday, the vast majority it seemed from out-of-state, it was all about the smoking. ( Hyoung Chang, The Denver Post ) 
 
 Beefy, black-clad security officers — donning bulletproof vests and perched on a scaffolding — peered across Civic Center park through military-style binoculars Saturday as crowds began to grow for the first day of Denver's 4/20 rally. "It's been so fun, and I'm getting paid for this," she said. Also, a third person was grazed by a bullet in the shooting.  DENVER (AP) — Once the province of activists and stoners, the traditional pot holiday of April 20 has gone mainstream in the first state in the nation to legalize recreational marijuana. "We're going to light up no matter what," Genung said.
– Potheads in Colorado aren't letting a little thing like the fact that The Man says it's OK deter them from lighting up a 4/20 weekend that's suddenly gone mainstream: As CNN reports, the Mile High City is throwing itself a party that by some estimates has attracted 80,000 visitors. The two-day event, which apparently culminates with a wave of pot smoke as partygoers light up at 4:20pm local time, features a "4/20 Rally," a High Times Cannabis Cup, and a concert headlined by—you guessed it—Snoop Dogg. "It's like his Super Bowl," says Kate, who oddly wouldn't give her last name, of her boyfriend. "He's been giddy about it for weeks. ... Super stoked is an understatement." Others were less enamored: "It's a lot mellower this year," 29-year-old Cody Andrews tells the AP. "It's more of a venue now. More vendor-y." And it's definitely not all peace and love, man: Security is pretty tight, reports the Denver Post, complete with patdowns and beefy guards. "It's presidential-style security," says the event organizer.