Radiation Therapy and Ammonium Tetrathiomolybdate in Treating Patients With Stage I, Stage II, or Stage III Non-Small Cell Lung Cancer

RATIONALE: Ammonium tetrathiomolybdate may stop the growth of non-small cell lung cancer by blocking blood flow to the tumor. Radiation therapy uses high-energy x-rays to kill tumor cells. Giving ammonium tetrathiomolybdate together with radiation therapy may kill more tumor cells. PURPOSE: This phase I trial is studying the side effects of giving radiation therapy together with ammonium tetrathiomolybdate in treating patients with stage I, stage II, or stage III non-small cell lung cancer.