Historical clue formulations

• One in it for the long haul — 2024-02-22
• Die-hard fan no matter what, in slang — 2020-12-12
• Career employee — 2018-02-11
• One with a long sentence — 2017-07-19
• Subject of a long sentence? — 2017-06-26
• Long-term inmate — 2017-04-10
• Big house party? — 2016-05-04
• One who never changes jobs — 2015-02-18
• One with a long, long sentence — 2014-12-01
• One stuck in the can — 2009-05-21
• Career soldier — 2007-12-23
• Prisoner who'll never get out — 2004-05-31
• One who serves long? — 2002-01-25
• Inmate who's never getting out — 2000-07-10
• Career officer — 1998-09-30
• One with no hope of getting out — 1998-02-24