AI Analysis:
December 1980 Texas incident involving Betty Cash, Vickie Landrum, and Colby Landrum encountering diamond-shaped object emitting intense heat and radiation. Witnesses developed severe radiation poisoning symptoms including burns, hair loss, and vision damage requiring hospitalization. Multiple CH-47 Chinook helicopters observed escorting craft. Medical records document injuries consistent with ionizing radiation exposure. Government denied involvement despite helicopter identification matching military inventory.