Pulsed Low Dose Rate Radiation With Concurrent Chemotherapy for Non-Small Cell Lung Cancer and Esophageal Cancer

Inclusion Criteria: 1. Patient must have pathologically-confirmed and previously untreated: * Non-small cell lung cancer, Stage IIIA (T1-3 N2 M0); OR * Localized esophageal cancer, ≥T2, or N+, and M0 according to the American Joint Committee on Cancer (AJCC) 7th edition staging. 2. The planned treatment regimen must be concurrent chemoradiation with Carboplatin-Paclitaxel followed by surgery. 3. Age \> 18 years. 4. Eastern Cooperative Oncology Group (ECOG) performance status is 0-1. 5. Laboratory studies must meet each of the following criteria (with labs drawn within 4 weeks prior to the registration): * Absolute neutrophil count (ANC) ≥ 1,500 cells/mm3 * Platelets ≥100,000 cells/mm3 * Hemoglobin ≥ 8.0 g/dl (Note: The use of transfusion or other intervention to achieve Hgb ≥ 8.0 g/dl is acceptable) * Creatinine ≤2 X the upper limit of normal * Bilirubin ≤ 1.5 X upper limit of normal * Aspartate transaminase (AST) ≤ 3 X upper limit of normal 6. Men and women of childbearing potential must be willing to exercise an effective form of birth control (abstinence/contraception) while on study and for 3 months after therapy completed. 7. Patients must be able to read and write English to comply with the questionnaire portions of the protocol. 8. Subjects must sign a written informed study consent and HIPAA consent prior to performance of study-specific procedures or assessments and must be willing to comply with treatment and follow up. Exclusion Criteria: 1. Patients who have had previous radiotherapy in the thorax. 2. Patients who have a history of ataxia telangiectasia or other documented history of radiation hypersensitivity. 3. Patients who have a history scleroderma or other active connective tissue disease. 4. Women of childbearing potential must not be pregnant with a negative urine pregnancy test within 72 hours prior to registration and non-lactating; postmenopausal woman must have been amenorrheic for at least 12 months to be considered of non-childbearing potential; woman status post oophorectomy or hysterectomy are considered non-childbearing potential 5. Patients who have uncontrolled inter-current illness including, but not limited to, psychiatric illness/social situations that would limit compliance with study requirements.