Recitals in the Dec. 31, 2014, service agreement between Maverick Security and H.J. Russell Co. persuaded U.S. District Judge Robert M. Dow Jr. that the contract’s indemnification provision applied retroactively to a fatal shooting by a Maverick employee more than 15 months earlier.Russell managed Henry Horner Homes for the Chicago Housing Authority. Maverick started supplying security at Horner Homes in 2011 under a subcontractor agreement with Russell.Although the 2011 agreement contained an indemnification …