Before proceeding, I feel it necessary to clarify the reason these videos exist. A man by the name of Martyn Stubbs owned a Canadian TV station in the early 90's. one day he noticed that he was picking up signals from NASA missions, Being that he had the means to record these intercepted signals, he did for as long as he could these can all be found on his youtube channel,\s here the only real sentiment completely against any theory that is brought up about these footage's being proof of unidentified extra planetary contact is that the videos are not legitimate, they absolutely are, so I will take you through a few of my favorite

NASA STS mission 48

In this instance a UFO is seen traveling at tremendous speed, if you pay attention you’ll notice a surface to air missile was launched into orbit in which the craft seemingly dodged. The location in which the object came from is Australia; based on the Geographical location of the earth in this scene is above. I found later that there is a government base by the name of "PINE GAP" in Australia.

The Base is located in the center of the Continent which is operated by both Australia and the United States. Since 1988, it has been officially called the Joint Defense Facility Pine Gap (JDFPG); previously, it was known as Joint Defense Space Research Facility. [1]"

surprisingly clear cut, "Surface to space weaponry" is essentially in the name. The wiki link goes on to say that :

"Partly run by the U.S. Central Intelligence Agency (CIA), U.S. National Security Agency (NSA) and U.S. National Reconnaissance Office (NRO), the station is a key contributor to the NSA's global interception effort, which included the ECHELON program.[2][3][4][5] The unclassified cover term for the NSA facility at Pine Gap is RAINFALL" The link is found here : Pine Gap

the main sentiment against the theory of this being a UFO is the flash just before the craft propelled being proposed as the shuttles propulsion systems. This is a valid thought process, however, upon inspecting similar objects in the field of view this doesn’t match up with the surroundings. There are objects much closer in which they did move but only slightly. Regardless, there is no explanation of the missile put forth with that reasoning. It’s also important to keep in mind that the object was not stationary prior to the supposed blast, after which it took near a 90 degree turn. Watch, observe and enjoy.