Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4

Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4

Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4

Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4

Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4

Inclusion Criteria:

Arm 1: Healthy volunteers age 18 or older

Arm 1: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Arm 2: Patients with a diagnosis of primary lung cancer or lung metastases of any primary tumor origin

Arm 2: Patients deemed clinically eligible to be treated with standard of care lung SABR for patient arm

Arm 2: Patients of any gender age 18 or older

Arm 2: Patients with ECOG Performance Status 0-2 and select patients with Performance Status 3 deemed to be suitable candidates based on common sense clinical judgment on the risks versus benefits of SABR

Arm 2: Ability to understand and the willingness to sign (personally or by a legal authorized representative) the written IRB approved informed consent document.

Exclusion Criteria:

Arm 1: No Pregnant Women. All women of child bearing potential (last menstrual period within the previous 12 months and not surgically sterile) will be tested for pregnancy and documented by study team.

Arm 2: Patients clinically deemed ineligible for standard of care lung SABR treatment for the patient arm (for example, excessive tumor size, women who are pregnant or breast feeding, severe pulmonary fibrosis are relative contraindications for lung SABR and are part of standard of care clinical decision making).

Arm 2: Patients with newly-developed pneumothorax

Arm 2: Patients with critical acute illness precluding SABR in the judgment of the treating physician (examples could include active pulmonary embolism and infection requiring inpatient care)

Arm 2: Patients with ECOG Performance Status 4