by such bands as Long Beach Dub All Stars covering "Take Warning", Reel Big Fish covering "Unity", Blue Meanies covering "Yellin' in My Ear", Cherry Poppin' Daddies covering "Sound System", The Hippos covering "Freeze Up" and The Aquabats with a "campfire-style" cover of "Knowledge". Other bands to cover Operation Ivy songs include a rendition of "Healthy Body" by Area-7, "Smiling" by Goldfinger, "Sound System" by Buck O Nine, "Caution" by No Trigger and more covers of "Knowledge" by both Millencolin and Evergreen Terrace. Link 80 was known to cover "I Got No," "The Crowd" and "Room Without a Window" (which appeared on their first demo, recorded at Gilman). Hollywood Undead released a cover of the song "Bad Town" in 2010, Green Day recorded a cover of the Operation Ivy song "Knowledge" for its extended play Slappy which was later released on the compilation album 1,039/Smoothed Out Slappy Hours. Green Day have continued to play the song live (where the band picks members out of the audience to play its instruments). Additionally, Rancid have played Operation Ivy songs at its live performances. In October 2015, Leftöver Crack, a band heavily influenced by Operation Ivy, were joined by Jesse Michaels for performances of "Sound System" and "Unity". Armstrong also joined Boston ska band Big D and the Kids Table for a performance of "Sound System" in Montreal. Subsequent careers Two of the band's members, Armstrong and Freeman, have performed with the bands Rancid, The Ljs, Dance Hall Crashers, Generator, Basic Radio, Downfall, Devil's Brigade, Shaken 69 and Transplants. Additionally, Freeman has performed with Auntie Christ, MDC and Social Distortion. Armstrong also has begun releasing music under the moniker Tim Timebomb. Drummer Dave Mello went on to perform in the punk band Schlong with his brother Pat and singer Gavin. He is currently drumming in the punk band Kicker from Oakland California, replacing previous drummer Toby Bitter (known best for being in the bands Filth, Impuse Items, and Submachine). Michaels eventually resurfaced with a project band, Big Rig, which released a four-song EP titled Expansive Heart. In 1999 he formed Common Rider, which included bassist Mass Giorgini (producer and bassist for Squirtgun) and drummer Dan Lumley (of Squirtgun and Screeching Weasel, among others). Common Rider released a seven-inch EP and two studio albums and toured nationwide before disbanding in 2003. B-sides from its second album This Is Unity Music were used in a