Seven Crows order to destroy the cross-border vampiric threat. Riley and Sam cannot count on back-up from their normal team, as high-level string pulling has pushed them off the case officially. The four discover there is more than just seemingly random vampire murders when more than one supernatural threat shows up and local hospitals begin filling with the sick and the dying. Crows are also prevalent as well. Many are mysteriously dying. Living crows seem to be warning the foursome of future threats based on an old poem. The poem goes like this: "One crow sorrow/Two crows mirth/Three crows a wedding/Four crows
CROWS and was soon integrated into the Oshkosh M-ATV, JERRV, Caiman, and MaxxPro. A nautical version of the CROWS II weapons system has been developed and deployed by the U.S. Navy on its Mark VI patrol boats . It allows vessels to engage speedboats piloted by suicide bombers at longer ranges. Gyrostablization is particularly important for a weapon carried by a small vessel being buffeted by waves when traveling at high speed. In Navy service, the CROWS II is referred to as the "MK50 Gun Weapon System (GWS)." By September 2013, the U.S. Army had over 8,000 CROWS systems in use.