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The heart of the A-10 is the GAU-8/A Avenger. This seven-barrel Gatling gun is the size of a small car and fires 30mm depleted uranium shells at a rate of 3,900 rounds per minute. For the SEALs on the ground, that sound is the “Burrrp” of salvation.
The Crisis: 381 Lives in a Kill Zone
The situation in the valley was a tactical nightmare. The 381 SEALs were pinned against a sheer rock face with enemy forces occupying the ridgelines above. Command refused to send air support, citing the high risk of “blue-on-blue” (friendly fire) due to the proximity of the combatants.
The “Illegal” Takeoff
Ignoring the grounding order from Major Sanderson, Delaney sprinted to her A-10. She bypassed the standard startup protocols, cutting her pre-flight time in half. As she throttled up, the control tower screamed for her to abort. She switched her radio to the ground frequency of the trapped SEALs and ignored the rest.
“Thunderbolt 7, you are not authorized for departure!” Sanderson’s voice crackled.
“I’m not departing, Sir,” Delaney responded as the wheels left the tarmac. “I’m delivering.”
Blasting the Exit: The Physics of Close Air Support
When Delaney arrived at the valley, the visibility was less than a mile. To hit the enemy without killing the SEALs, she had to perform a maneuver known as a “Low-Angle Strafe.” Standard procedure required a 3,000-foot ceiling for safety; Delaney dropped to 200 feet, threading her wings between the canyon walls.
She didn’t just fire at the enemy; she used the GAU-8 to create a “curtain of lead.” By strafing the ridgeline in a precise, sweeping arc, she forced the enemy to retreat into the caves, creating a momentary 30-second window.
The Impact by the Numbers:
| Metric | Statistic |
| Friendly Personnel Saved | 381 Navy SEALs |
| Ammunition Expended | 1,170 rounds of 30mm shells |
| Altitude during Strafe | 200 feet (1,800 feet below “safe” minimums) |
| Enemy Positions Neutralized | 14 fortified bunkers |
The Shattered Glass Ceiling
Delaney Thomas returned to the base with 120 holes in her aircraft’s fuselage. Her titanium bathtub had saved her life, but her precision had saved 381 others.
Major Sanderson was waiting on the tarmac with a military police escort, but he was intercepted by the SEAL commander who had hitched a ride on the first medevac. The commander didn’t say a word; he simply handed Sanderson a piece of shrapnel that had landed at his feet—a shell casing from Delaney’s cannon.
Delaney was eventually grounded for six months for her insubordination, but she was also awarded the Silver Star. More importantly, the “Delaney Maneuver”—using terrain masking at ultra-low altitudes—became a mandatory part of the A-10 training curriculum.
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