SK Capital-backed Perimeter Solutions completed the purchase of a group of companies in Post Falls, Idaho, including First Response Fire Rescue, River City Fabrication and H&S Transport. Financial terms were not disclosed. Perimeter Solutions plans to integrate the three businesses within its manufacturing and services systems to expand its offering in the fire suppression sector. Perimeter will retain management and staff of the three companies, the facilities of which will become an operational site under Perimeter Solution’s Fire Safety Group. “There is a great cultural and strategic fit with Perimeter Solutions. As we looked for the right partner to grow and expand our wildland fire management services, it was important to find a partner whose core values align with ours,” Shannon Horn, First Response President.