sentences:  Some fire and rescue services employ a system known as "day manning" or "day staffing", where the fire station is operated by a full-time watch during the day and covered by retained firefighters at night.Whole-time firefighters attend training school for an initial period of 13–20 weeks, depending on the fire and rescue service they have joined.On-call firefighters now undertake the same training modules as full-time recruits, spread over a greater period of time due to full-time employment job commitments.