Another NOTAM catches your attention: "Minneapolis Center (Farmington MN) [ZMP]: January NOTAM #4 issued by Central Alt Res Fac CA [CARF] Central Altitude Reservation Facility notice number 8 on TWA lakes stationary reservation within an area bounded by 104 nautical miles on the 051° radial of Duluth [DLH VOR] 91 nautical miles on the 068° radial of Duluth [DLH VOR] 17 nautical miles on the 034° radial of Sawyer [SAW VOR] 46 nautical miles on the 016° radial of Sawyer [SAW VOR] FL200 - FL250 will be effective January 06th, 2004 at 12:15 PM CST (0401061815) - January 06th, 2004 at 05:00 PM CST."
What does "TWA" mean in this NOTAM?
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