After his retirement in 1997, he spent seven seasons (1998–2005) as the Cowboys' defensive ends assistant coach. Jeffcoat spent his last five seasons in the organization as the defensive ends coach after two years as the club's assistant defensive line coach. On January 28, 2008, Jeffcoat was hired to join Kevin Sumlin's staff at the University of Houston as defensive line coach. Prior to arriving in Houston, Jeffcoat was in private business in the Dallas area for two years. From 2011 to 2012, Jeffcoat coached the San Jose State defensive line. In January 2013, he joined the University of Colorado Buffaloes as defensive line coach under recently hired head coach Mike MacIntyre. In November 2018, Jeffcoat was hired by Steve Spurrier as defensive line coach for the Orlando Apollos of the Alliance of American Football. In June 2019, Jeffcoat was hired by Bob Stoops as defensive line coach for the Dallas Renegades of the new XFL. Jeffcoat and his wife, Tammy, live just outside the suburb of Plano, Texas, with their four children: twins Jackson and Jacqueline, Jaren, and Jasmine. Jacqueline was a top 2010 class basketball center recruit for the University of Oklahoma, while Jackson played in the NFL for the Washington Redskins. He currently owns an Allstate insurance agency. Ueda Castle  Ueda Castle is located on a hill overlooking a branch of the Chikuma River at the northeast edge of the Nagano plain, which forms part of its southern defences and acts as a moat. The Central Bailey ("Hon-Maru") [1] originally had seven two-story "yagura", but no "donjon" and was protected by a moat as well as stone ramparts. The Central Bailey is also surrounded by a Second Bailey ("Ni-no-Maru") [2], also with moats and earthen ramparts. The adjacent Third Bailey ("San-no-maru") [3], had additional "yagura", of which only the foundation bases remain, and contained the main residence of the "daimyō" [R] (which was also protected by a moat), gardens [G] and work area [A], and the main gate ("Ōtemon") of the castle [H]. Most of the area of the former Third Bailey is now occupied by the Ueda High School. During the Sengoku period, the area around Ueda was under the control of the Sanada clan, a minor local warlord in the service of the Takeda clan.