Dugwayâs Chemical Test Division successfully tests JCAD system on Stryker. Caged in a menacing looking metal grid with intricate sensory equipment attached to all sides the Armyâs M113 NBC RV Stryker vehicle sits on a dusty road at Dugway Proving Groundâs target S grid being readied by its crew for testing....
The following conditions are when secondary curvatures of the spine  develop:   Cervical-when the baby starts to hold its head up   Lumbar-when the baby starts to â¦ walk. 4 people found this useful.
1 Abnormal skeletal conditions commonly develop as children grow. 2  Some of these problems correct themselves as children age, while others continue to affect them throughout aduâ¦. 3  What to Expect from Scoliosis Surgery Scoliosis is an abnormal sideways curvature of the spine.