Map for Sentinel Security Group, Inc. Map for Sentinel Security Group, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Finance & Insurance >> Armored Car Service Sentinel Security Group, Inc. 3736 N. Market StreetShreveport, LA 71107 318-227-9175 | fax: 318-562-1460 Visit Site If your business isn't here, contact us today to get listed!