For 35+ years, the Arrington Security Investigations Inc. has provided a high level of security guard services for residential and commercial clients throughout Baltimore County, Baltimore City and surrounding counties. Being Retired Police Officers, our team brings a well in depth understanding of knowledge, hands-on security experience and real world practicality. We know firsthand what works. Our years of training, understanding security protocols, and implementing proprietary processes ensures YOU, our customer, that your company will get the services you need, when you need them and where you need them.