Historical clue formulations

• Enterprise letters — 2026-08-09
• ___ Constitution — 2026-04-05
• Letters before Enterprise or Intrepid — 2026-02-02
• Initialism on a Navy carrier — 2026-01-12
• Inits. for this puzzle's shaded squares — 2025-08-03
• Carrier letters — 2024-08-02
• Navy vessel letters — 2024-04-17
• Letters on a bow — 2024-02-17
• Letters before Constitution or Enterprise — 2022-10-16
• ___ Enterprise — 2021-09-23
• Letters before Gerald R. Ford and Ronald Reagan — 2021-04-11
• ___ Intrepid (N.Y.C. carrier museum) — 2021-01-12
• ___ Constitution — 2020-05-27
• ___ Arizona — 2020-05-07
• Letters naval gazers see — 2019-12-29
• Battleship letters — 2019-12-10
• Letters on some American naval vessels — 2019-12-02
• Inits. before some presidents' names — 2019-11-28
• ___ Constitution — 2019-08-18
• ___ Missouri — 2019-08-15
• Letters at sea — 2019-05-12
• ___ Nautilus — 2019-03-24
• ___ Enterprise — 2019-02-18
• ___ Intrepid (New York City tourist attraction) — 2019-02-13
• ___ Constitution — 2019-02-07
• Inits. before many state names — 2018-12-23
• Enterprise starter — 2018-11-25
• In sci-fi, it had the registry number NCC-1701 — 2018-06-28
• ___ Indianapolis — 2018-03-18
• ___ Enterprise — 2017-12-26
• ___ Enterprise — 2017-09-12
• ___ George H. W. Bush — 2017-03-24
• Letters in front of many a state name — 2016-11-18
• ___ Midway — 2016-08-27
• Letters before Kitty Hawk — 2016-04-01
• Enterprise letters — 2015-12-04
• Letters before John F. Kennedy or George H. W. Bush — 2015-11-20
• Letters before many a state's name — 2015-10-25
• Carrier letters — 2015-08-23
• ___ Midway — 2015-02-04
• Letters at the start of a destroyer's name — 2013-09-02
• ___ Arizona (Pearl Harbor memorial) — 2012-05-29
• Navy vessel initials — 2012-01-09
• Naval vessel inits. — 2011-10-19
• ___ Intrepid — 2010-10-10
• ___ Enterprise — 2009-05-20
• Letters at sea — 2009-04-23
• Enterprise inits. — 2008-12-31
• Maine, e.g.: Abbr. — 2008-11-30
• Constitution lead-in — 2008-05-16