Friday, June 6, marks the 25th anniversary of the FBI and EPA raid on Rocky Flats, the former U.S. nuclear weapons facility in Arvada. In an effort to recognize a significant part of Coloradoâs history, the Arvada Center of the Arts, in partnership with CU-Boulder's Center of the American West , will host a weekend-long event, " Rocky Flats Then and Now: 25 Years After the Raid ," June 6 - 8. CU-Boulder Professor Emeritus Len Ackland will give the eventâs introduction talk, âRocky Flats Then and Nowâ on Friday, June 6, at 7 p.m.