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.
There are three main types of spine curvature disorders, including: 1  Lordosis. 2  Also called swayback, the spine of a person with lordosis curves significantly inward at the lower back. 3  Kyphosis. 4  Kyphosis is characterized by an abnormally rounded upper back (more than 50 degrees of curvature). 5  Scoliosis. Also called swayback, the spine of a person with lordosis curves significantly inward at the lower back. 2  Kyphosis. 3  Kyphosis is characterized by an abnormally rounded upper back (more than 50 degrees of curvature).