Can a swing driver at Express be given warning letters/performance reminders solely based on low SPH, lates, gap reports, numbers? Is it possible for a swing driver to lose his or her position as a swing driver based solely on poor performance (not counting safety ie. accidents/occurances)? It seems the swings at my station just take their time and focus on safety (as they should) and still get to keep their jobs as swing drivers with low 'numbers.' I ask because I am considering taking a swing position which has recently come up where I am.