Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible. Lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible. Patients with surgically resected brain metastases are eligible. Patients with 3 or fewer brain metastases that are less than 1 centimeter (cm) in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for one month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible For cohorts 1-3, patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for one month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with three or fewer brain metastases that have been treated with surgery or stereotactic radiosurgery are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for one month before protocol treatment; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions > 1 cm that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible. Lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible. Patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resectable brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible Patients with 3 or less brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible; patients with surgically resected brain metastases are eligible Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible; lesions that have been treated with stereotactic radiosurgery must be clinically stable for 1 month after treatment for the patient to be eligible