Problem: Background: Ira Hayes was born in Sacaton, Arizona, a town in the Gila River Indian Community in Pinal County. He was the eldest of six children born to Nancy Hamilton (1901-1972) and Joseph Hayes (1887-1978). The Hayes children were: Ira (1923-1955), Harold (1924-1925), Arlene (1926-1929), Leonard (1927-1952), Vernon (1929-1958), and Kenneth (born 1931). Joseph Hayes was a World War
Context: Hayes enlisted in the Marine Corps Reserve on August 26, 1942. He completed recruit training in Platoon 701 at Marine Corps Base, San Diego (renamed in 1948, Marine Corps Recruit Depot, San Diego) and in October volunteered for Marine paratrooper (Paramarine) training at the Marine Parachute School at Camp Gillespie located east of San Diego. He received the codename of Chief Falling Cloud. On November 30, he graduated from the Parachute Training School and received his silver "jump wings". On December 1, he was promoted to Private First Class. On December 2, 1942, he joined Company B, 3rd Parachute Battalion, Divisional Special Troops, 3rd Marine Division, at Camp Elliott, California. On March 14, 1943, Hayes sailed for New Caledonia with the 3rd Parachute Battalion, which was assigned to Camp Kiser there on March 25 until September 26; the unit was redesignated in April as Company K, 3rd Parachute Battalion, 1st Marine Parachute Regiment of the I Marine Amphibious Corps. The 3rd battalion was shipped to Guadalcanal and remained there until it was sent to Vella Lavella, arriving on October 14 for occupational duty. On December 4, Hayes landed with the 3rd battalion on Bougainville and fought against the Japanese as a platoon automatic rifleman (BAR man) with Company K during the Bougainville Campaign. The 3rd Parachute Battalion was shipped back to Guadalcanal, and he stayed there until sometime in February when the Paramarines were sent back to California. The 1st Parachute Regiment was officially disbanded at Camp Pendleton, California, in February 1944. Hayes was transferred to Company E, 2nd Battalion, 28th Marine Regiment of the newly activated 5th Marine Division at Camp Pendleton. Hayes sailed to Hawaii with his company in September for continued training with the 5th division as it trained for the invasion and capture of Iwo Jima.
Question: How long was he in the reserve?
Answer: and in October volunteered for Marine paratrooper (Paramarine) training at the Marine Parachute School at Camp Gillespie located east of San Diego.

Background: Bruce Randall Hornsby (born November 23, 1954) is an American singer and pianist. Hornsby draws frequently from classical, jazz, bluegrass, folk, Motown, gospel, rock, blues, and jam band musical traditions. Hornsby's recordings have been recognized on a number of occasions with industry awards, including the 1987 Grammy Award for Best New Artist with Bruce Hornsby and the Range, the 1990 Grammy Award for Best Bluegrass Album, and the 1994 Grammy Award for Best Pop Instrumental Performance. Hornsby has also achieved recognition for his solo albums and performances, his touring band Bruce Hornsby and the Noisemakers, his bluegrass project with Ricky Skaggs and his appearances as a session and guest musician.
Context: Hornsby played more than 100 shows with the Grateful Dead from 1988 until Jerry Garcia's death in 1995. At some shows in 1988 and 1989, he joined the band as a special guest and played accordion or synthesizer. Starting in the fall of 1990, he played piano (and frequently accordion) at many gigs following the death of longtime Grateful Dead keyboardist Brent Mydland, who died suddenly in July 1990. Mydland's place was filled in September 1990 by Vince Welnick, who became the sole keyboardist by March 1992, although Hornsby still sat in with the band on occasion. Hornsby's own music evolved significantly during this time period. Critics have suggested that the Dead's vibrant tradition of melding folk music and the blues with psychedelic rock in "loose-knit expressions" and extended jamming "further pushed [Hornsby] outside the confines of mainstream pop." Critics have also commented upon the "close musical connection" formed between Hornsby and Jerry Garcia, suggesting that Hornsby's particular style of jazz-fueled improvisation added to the band's repertoire, and helped to revitalize and refocus Jerry Garcia's guitar solos in the band's sound. Hornsby's friendship with Garcia continued, both inside and outside the band, as the two "challenged" each other to expand their musicianship through several other album and live collaborations. Above all, Hornsby's musical versatility and ability to slip in and out of extended freeform jams won over longtime Grateful Dead fans. Since his first involvement with the Grateful Dead, Hornsby's live shows have drawn Deadheads and Hornsby has commented: "I've always liked the group of fans that we've drawn from the Grateful Dead time, because those fans are often adventurous music listeners." He has performed a number of their songs at his concerts and as homages on studio and live albums, while Hornsby originals "The Valley Road," and "Stander on the Mountain," appeared several times in the Dead's setlists. Hornsby also co-performed the improvisation "Silver Apples of the Moon" for the Grateful Dead's Infrared Roses. Hornsby was the presenter when the Grateful Dead were inducted into the Rock and Roll Hall of Fame in 1994 and in 2005 he participated in "Comes a Time", a tribute concert to Jerry Garcia. He continues to work with Dead-related projects, such as Bob Weir's Ratdog, Mickey Hart's solo projects. He performed as part of The Other Ones in 1998 and 2000, and on occasion sat in with The Dead. Hornsby continues to be involved in the Grateful Dead and Furthur community, having opened All Good Music Festival in 2012 featured with Bob Weir on rhythm guitar. In mid-2013, Hornsby performed with Grateful Dead-influenced bluegrass group Railroad Earth. Hornsby reunited with surviving members of the Grateful Dead along with Trey Anastasio from Phish and Jeff Chimenti at Levi's Stadium in Santa Clara, California, and later at Soldier Field in Chicago, Illinois, in July 2015.
Question: Was the group already formed when he joined?
Answer:
Hornsby played more than 100 shows with the Grateful Dead from 1988 until Jerry Garcia's death in 1995.