Complex sentence: There were concerns about the team's future, but then Breitling stepped into the breach and invested further in the team to allow the outfit to expand from a 4-ship to the 7-ship formation it flies nowadays.
Split into simpler sentences: There were concerns about the team's future, but then Breitling stepped into the breach and invested further in the team. This allowed the outfit to expand from a 4-ship to the 7-ship formation it flies nowadays.