Allied Universal, a global security and facility services company, agreed to acquire MSA Security, a provider of comprehensive threat protection solutions, from GreyLion Capital, a middle market private equity firm. Financial terms were not disclosed. "The acquisition of MSA Security will not only expand our K9 program on a local and national level but will also increase our security resources around the world. For more than 30 years, MSA Security has achieved success through its strong customer relationships, expertise and reliable service. This acquisition aligns perfectly with our strategic goals for identifying strong and high performing companies that offer vast services and are continuing to grow," Steve Jones, Allied Universal Global Chairman and CEO.