Gander et al. (2015) examined the effect of in-flight sleep patterns on pilots’ sleepiness, fatigue, and response times when they were on the long-range trips; a total of 237 pilots were studied. Secondary data were used and collected from four different airlines. Participating pilots took one or two in-flight breaks to allow for in-flight sleep, (flight durations ranged 9.8-18.3 hours). One hour before landing, participants were asked to report their perceived sleepiness and fatigue, and take a response time test. Results showed that the average participants’ in-flight total sleep time was 3.68 hours. If participants slept more in flight, they experienced less sleepiness and fatigue. If participants’ flights arrived to the destination early in the morning, they reported feeling more sleepy and fatigued, and demonstrated slower response times compared to participants whose flights arrived later. These findings might suggest that appropriate breaks are necessary for safe performance of workers in high-stress jobs, like pilots.