This is an observational pilot study. The target population includes adult patients diagnosed with NSCLC receiving an immune checkpoint inhibitor and reporting concerns of fatigue to their provider. This study will be conducted at Levine Cancer Institute (LCI) and Atrium Health Wake Forest Baptist Comprehensive Cancer Center (AHWFBCCC). This study consists of qualitative interviews at two-time points, the primary, and the follow-up. During the primary interview, patients with NSCLC will be asked to complete the PROMIS® Fatigue-Short Form 7a consisting of seven items. During the follow-up interviews, participants will be asked about any change in their fatigue and views on physical activity.