Hackett Security, a St. Louis-area security systems company, opened a new office in the McLean, Va., area to better serve the firm’s East Coast clientele. The new office is the firm’s fifth location, in addition to its St. Louis headquarters.

Select Security, Lancaster, Pa., expanded into Kentucky with the acquisition of three local companies. Over the past several months, Select Security has welcomed the employees and several thousand customers from Comstar Systems in Bowling Green, AAA Systems in Elizabethtown, and Bardstown Alarm in Bardstown.

S2 Security announced the expansion of its sales and application engineering support in the Middle East and Africa. The company is investing in this expansion to address the growing demand for S2 products and services in the region, which already has a number of high-profile customers.