Probiotics such as bifidobacteria are typically used in cases when a disease occurs or might occur due to a kill-off of normal bacteria. For example, treatment with antibiotics can destroy disease-causing bacteria, but also normal bacteria in the GI (gastrointestinal) and urinary tracts.
The 3-place Hiller Model 360, military H-23 Raven, was based on the U.S. Navy UH-12, which was first flown in 1948. The H-23 Raven performed as a utility, observation, and MedEvac helicopter during the Korean war.
Also, the Super Stallion can recover all rotorcraft in the U.S. Marine Corps' inventory. The older CH-53D Sea Stallion was a medium-lift helicopter designed to transport personnel, supplies and equipment in support of amphibious and shore operations. It has six main rotor blades and is powered by two General Electric T64-GE-413 turboshaft engines, each rated at 3,925 shp.