Vertical draft

An updraft is a small‐scale current of rising air, often within a cloud. One of two forces causes the air to move. Localized regions of warm or cool air will exhibit vertical movement. A mass of warm air will typically be less dense than the surrounding region, and so will rise until it reaches air that is either warmer or less dense than itself. The converse will occur for a mass of cool air, and is known as subsidence. This movement of large volumes of air, especially when regions of hot, wet air rise, can create large clouds, and is the main cause of thunderstorms. Drafts can also be created by low or high pressure regions. A low pressure region will attract air from the surrounding area, which will move towards the center and then rise, creating an updraft. A high pressure region will then attract air from the surrounding area, which will move towards the center and sink, creating a downdraft.

Updrafts and downdrafts, along with wind shear in general, are a major contributor to airplane crashes during takeoff and landing in a thunderstorm. Extreme cases, known as downbursts and microbursts can be deadly and difficult to predict or observe. The crash of Delta Air Lines Flight 191 on its final approach before landing at Dallas/Fort Worth International Airport in 1985 was presumably caused by a microburst, and prompted the Federal Aviation Administration (FAA) to research and deploy new storm detection radar stations at some of the major airports, notably the ones in the South, Midwest, and Northeast United States where wind shear affects air safety. Downbursts can cause extensive localized damage, similar to that caused by tornadoes. Downburst damage can be differentiated from that of a tornado because the resulting destruction is circular and radiates away from the center. Tornado damage radiates inward, towards the center of the damage.

List of G.I. Joe: A Real American Hero characters (S–Z)

This is an alphabetical List of G.I. Joe: A Real American Hero characters whose code names start with the letters S-Z.

Salvo

Salvo is the G.I. Joe Team's Anti-Armor Trooper. His real name is David K. Hasle, and he was born in Arlington, Virginia. Salvo was first released as an action figure in 1990, and again in 2005. Both versions have the T-shirt slogan 'The Right of Might'.

Salvo's primary military specialty is anti-armor trooper. He also specializes in repairing "TOW/Dragon" missiles. Salvo expresses a deep distrust of advanced electronic weaponry. He prefers to use mass quantities of conventional explosives to overwhelm enemy forces.

In the Marvel Comics G.I. Joe series, he first appeared in issue #114. There, he fights as part of a large scale operation against Cobra forces in the fictional country of Benzheen. Steeler, Dusty, Salvo, Rock'N'Roll and Hot Seat get into vehicular based combat against the missile expert Metal-Head He is later part of the Joe team on-site who defends G.I. Joe headquarters in Utah against a Cobra assault.