diff --git a/airdef-mod/src/lib.rs b/airdef-mod/src/lib.rs
index a131c8d..02727c2 100644
--- a/airdef-mod/src/lib.rs
+++ b/airdef-mod/src/lib.rs
@@ -2540,6 +2540,82 @@ mod tests {
 
     use super::*;
 
+    fn test_mod() -> AirDef {
+        AirDef {
+            sim: Sim::new(1),
+            ground: Ground::default(),
+            dirty: false,
+            next_save: 0,
+            hud_shown: false,
+            monitor: None,
+            monitor_shown: false,
+            grid: false,
+            grid_ids: Vec::new(),
+            wave: wave::WaveConfig::default(),
+            presentation: presentation::Session::default(),
+            block_log: None,
+            time_view: false,
+            film_prev: None,
+            smoke: Default::default(),
+            far: true,
+            acoustics: None,
+            moving: None,
+            hd: false,
+            world: None,
+            health_mark: 0,
+            menu: None,
+            listener: DVec3::ZERO,
+            punch: 0.0,
+            pending: Vec::new(),
+            engines: engines::Engines::default(),
+            engine_gen: u32::MAX,
+            engines_replay: false,
+            model_ids: std::collections::HashMap::new(),
+            model_generation: u32::MAX,
+            by_id: Vec::new(),
+            map: map::MapUi::default(),
+        }
+    }
+
+    #[test]
+    fn delivery_request_and_cargo_survive_full_state_round_trip() {
+        struct Flat;
+        impl sim::world::WorldSource for Flat {
+            fn solid(&self, _: i32, y: i32, _: i32) -> Option<bool> { Some(y < 64) }
+        }
+        let mut before = test_mod();
+        for (kind, x) in [(SamKind::Depot, 0.0), (SamKind::S400, 160.0), (SamKind::Tzm, 30.0)] {
+            let id = before.sim.id();
+            before.sim.sams.push(Sam::new(id, kind, DVec3::new(x, 64.0, 0.0), 0.0));
+        }
+        before.sim.sams[1].ground_request = true;
+        before.sim.sams[1].ground_rounds = 1;
+        before.sim.sams[1].missiles = 3;
+        before.sim.sams[2].ground_stock = 1;
+        before.sim.order_move(2, DVec3::new(100.0, 64.0, 0.0));
+        let text = before.state_text(false, false);
+        let mut after = test_mod();
+        after.apply_state(&text).unwrap();
+        assert_eq!((after.sim.sams[0].ground_stock, after.sim.sams[1].ground_rounds, after.sim.sams[1].missiles), (0, 1, 3));
+        assert!(after.sim.sams[1].ground_request);
+        assert_eq!(after.sim.sams[2].ground_stock, 1);
+        assert!(after.sim.sams[2].moving());
+        let mut out = Out::default();
+        for _ in 0..6000 {
+            let now = after.sim.tick;
+            let cols = after.ground.take_wanted().into_iter().map(|(x, z)| (x, z, 64)).collect();
+            after.ground.answer(cols, now);
+            let sections = after.ground.world.take_wanted(now);
+            after.ground.world.serve(&Flat, sections, now);
+            after.sim.step(&mut after.ground, None, &mut out);
+            if after.sim.sams[0].air_48n6_stock == 1 { break; }
+            out = Out::default();
+        }
+        assert_eq!((after.sim.sams[1].ground_rounds, after.sim.sams[1].missiles), (2, 2));
+        assert!(!after.sim.sams[1].ground_request);
+        assert_eq!((after.sim.sams[0].air_48n6_stock, after.sim.sams[2].ground_stock, after.sim.sams[2].air_48n6_stock), (1, 0, 0));
+    }
+
     /// #83: while an export records no other replay or film replaces it; after it, they may.
     #[test]
     fn typed_ammunition_changes_mark_the_state_dirty() {
diff --git a/airdef-mod/src/sim/logistics.rs b/airdef-mod/src/sim/logistics.rs
index beab072..afa20f8 100644
--- a/airdef-mod/src/sim/logistics.rs
+++ b/airdef-mod/src/sim/logistics.rs
@@ -261,4 +261,28 @@ mod tests {
         assert_eq!((sim.sams[0].air_48n6_stock, sim.sams[2].air_48n6_stock), (1, 0));
         assert!(sim.load_ground_round(1).is_err());
     }
+    #[test]
+    fn pending_delivery_waits_for_compatible_type_and_cell_after_unload() {
+        let mut sim = Sim::new(2);
+        for kind in [SamKind::Depot, SamKind::S400, SamKind::Tzm] {
+            let id = sim.id(); sim.sams.push(Sam::new(id, kind, DVec3::ZERO, 0.0));
+        }
+        sim.sams[1].ground_request = true;
+        sim.sams[2].ground_stock = 1;
+        sim.sams[1].kind = SamKind::Patriot;
+        sim.tick = 2;
+        for _ in 0..4 { sim.step_supply(&mut Out::default()); }
+        assert_eq!(sim.sams[2].ground_stock, 1);
+        assert_eq!(sim.sams[1].ground_rounds, 0);
+        sim.sams[1].kind = SamKind::S400;
+        sim.sams[1].missiles = 0;
+        sim.sams[1].ground_rounds = 4;
+        for _ in 0..4 { sim.step_supply(&mut Out::default()); }
+        assert_eq!(sim.sams[2].ground_stock, 1);
+        sim.unload_ground_round(1).unwrap();
+        for _ in 0..4 { sim.step_supply(&mut Out::default()); }
+        assert_eq!((sim.sams[1].ground_rounds, sim.sams[2].ground_stock, sim.sams[0].ground_stock), (4, 0, 1));
+        assert!(!sim.sams[1].ground_request);
+    }
+
 }
diff --git a/airdef-mod/src/sim/regress.rs b/airdef-mod/src/sim/regress.rs
index 276be28..a22bb6a 100644
--- a/airdef-mod/src/sim/regress.rs
+++ b/airdef-mod/src/sim/regress.rs
@@ -1767,3 +1767,88 @@ fn a_blast_in_the_blocks_waits_for_the_games_word() {
     let s = ground.world.stats;
     assert_eq!((s.blasts_asked, s.blasts_confirmed, s.blasts_unchanged, s.blasts_unloaded), (3, 1, 0, 2));
 }
+
+#[test]
+fn strike_round_truck_drives_from_depot_to_carrier_and_returns_air_round() {
+    let mut sim = Sim::new(5);
+    for (kind, x) in [(SamKind::Depot, 0.0), (SamKind::S400, 160.0), (SamKind::Tzm, 0.0)] {
+        let id = sim.id();
+        sim.sams.push(Sam::new(id, kind, DVec3::new(x, 64.0, 0.0), 0.0));
+    }
+    sim.sams[0].ground_stock = 1;
+    sim.load_ground_round(1).unwrap();
+    let (mut ground, land) = (Ground::default(), sites::testland::Land(|_, _| 64));
+    let mut out = Out::default();
+    let mut seen_loaded = false;
+    let mut furthest: f64 = 0.0;
+    for _ in 0..6000 {
+        sites::testland::step(&mut sim, &mut ground, &land, &mut out);
+        seen_loaded |= sim.sams[2].ground_stock == 1;
+        furthest = furthest.max(sim.sams[2].pos.x);
+        if sim.sams[0].air_48n6_stock == 1 { break; }
+        out = Out::default();
+    }
+    assert!(seen_loaded, "truck never loaded RM48U");
+    assert!(furthest > 140.0, "truck did not drive to carrier: {furthest}");
+    assert_eq!((sim.sams[0].ground_stock, sim.sams[0].air_48n6_stock), (0, 1));
+    assert_eq!((sim.sams[1].missiles, sim.sams[1].ground_rounds), (3, 1));
+    assert_eq!((sim.sams[2].ground_stock, sim.sams[2].air_48n6_stock), (0, 0));
+    assert!(!sim.sams[1].ground_request);
+    assert!(sim.load_ground_round(1).is_err());
+}
+
+#[test]
+fn strike_delivery_waits_while_carrier_moves_and_resumes_after_repair() {
+    let mut sim = Sim::new(8);
+    for (kind, x) in [(SamKind::Depot, 0.0), (SamKind::S400, 160.0), (SamKind::Tzm, 0.0)] {
+        let id = sim.id();
+        sim.sams.push(Sam::new(id, kind, DVec3::new(x, 64.0, 0.0), 0.0));
+    }
+    sim.sams[0].ground_stock = 1;
+    sim.load_ground_round(1).unwrap();
+    let (mut ground, land) = (Ground::default(), sites::testland::Land(|_, _| 64));
+    let mut out = Out::default();
+    for _ in 0..300 {
+        sites::testland::step(&mut sim, &mut ground, &land, &mut out);
+        if sim.sams[2].ground_stock == 1 { break; }
+        out = Out::default();
+    }
+    assert_eq!(sim.sams[2].ground_stock, 1);
+    assert!(sim.order_move(1, DVec3::new(220.0, 64.0, 0.0)));
+    // Repair cancels both marches but preserves the outstanding request and truck's load.
+    sim.repair();
+    assert!(sim.sams[1].ground_request);
+    assert_eq!(sim.sams[2].ground_stock, 1);
+    assert!(sim.order_move(1, DVec3::new(220.0, 64.0, 0.0)));
+    for _ in 0..100 {
+        sites::testland::step(&mut sim, &mut ground, &land, &mut out);
+        out = Out::default();
+    }
+    assert_eq!(sim.sams[1].ground_rounds, 0);
+    for _ in 0..6000 {
+        sites::testland::step(&mut sim, &mut ground, &land, &mut out);
+        if sim.sams[1].ground_rounds == 1 { break; }
+        out = Out::default();
+    }
+    assert_eq!((sim.sams[1].ground_rounds, sim.sams[1].missiles), (1, 3));
+    assert!(!sim.sams[1].ground_request);
+}
+
+#[test]
+fn destroying_a_pending_carrier_and_loaded_truck_does_not_restore_stock_on_repair() {
+    let mut sim = Sim::new(8);
+    for (kind, x) in [(SamKind::Depot, 0.0), (SamKind::S400, 160.0), (SamKind::Tzm, 80.0)] {
+        let id = sim.id();
+        sim.sams.push(Sam::new(id, kind, DVec3::new(x, 64.0, 0.0), 0.0));
+    }
+    sim.sams[1].ground_request = true;
+    sim.sams[2].ground_stock = 1;
+    let mut out = Out::default();
+    sim.direct_hit(sim.sams[1].pos + DVec3::Y, DVec3::ZERO, 1, &mut out);
+    sim.direct_hit(sim.sams[2].pos + DVec3::Y, DVec3::ZERO, 1, &mut out);
+    assert!(!sim.sams[1].alive());
+    assert!(!sim.sams[2].alive());
+    sim.repair();
+    assert!(!sim.sams[1].ground_request);
+    assert_eq!((sim.sams[0].ground_stock, sim.sams[2].ground_stock), (0, 0));
+}