Special Tactics Advanced Skills Training, Hurlburt Field, Fla. Advanced skills training is a 12-to-15-month program for newly assigned combat controller operators. AST produces mission-ready operators for the Air Force and U.S. Special Operations Command. The AST schedule is broken down into four phases: water, ground, employment and full mission profile.
Saltatory Conduction. As in un-myelinated axons, the first action potential in myelinated axons takes place at the initial segment of an axon and is generated by a threshold stimulus from the dendrites and cell body. Subsequent action potentials occur at the nodes of Ranvier, where the Na+ voltage-gated channels are located. Therefore, when nerve impulses travel down a myelinated axon, they appear to jump from node to node - in a process called saltatory conduction. Each nodal action potential is triggered by a threshold stimulus created by passive current from the previous node.
1 Transmit nerve impulses: Nerves are able to transmit impulses along the length of the nerve cell in the form of an electrical signal (like power lines). 2  These electrical signals move from one end of the nerve cell to another and can pass from nerve to nerve (power pole to power pole).mpulses that are sent along neurons are called action potentials. An action potential (also known as an impulse) is the electrical current that travels the length of an axon when a neuron has been stimulated. At rest the membrane inside of a neuron has a negative charge. This is called the resting membrane potential.