The Software Engineer handles simulator system discrepancies discovered at any C-5 simulator site and verified by the relevant test group to affect more than one simulator. Those snags which are traceable to a software cause give rise to a detail redesign and retest sequence. Where the snag is traced to a supplier’s modification effort, the correction is requested of the supplier and made available for in house test. Snag fixes are aggregated to periodic software releases which are distributed to sites for replacement of previous software deliveries. Software engineering also coordinates the software modifications to simulated systems contracted to third party vendors.