Before revision: Additionally, each Monday through Friday a fourth crew is on a "Training Week" where they participate in classroom "continuous training" lectures and testing, provide qualification support to the students in the section, and also provide maintenance support to the on-shift Days crew as required.
After revision: Additionally, each Monday through Wednesday a fourth crew is on a "Training Week" where they participate in classroom "continuous training" lectures and testing, provide qualification support to the students in the section, and also provide maintenance support to the on-shift Days crew as required.