many effects that a nuclear explosion would have on materials and electronic systems. They were also used to test the energy of the explosion and what forms of energy they would produce. Yucca was the name of the first high-altitude test and it was performed near the Enewetak Atoll in the Marshall Islands. The other two high-altitude tests, Orange and Teak, were performed near the Johnston Atoll in the South Pacific Ocean about southwest of the Hawaiian Islands. Impact on ozone layer There was some uncertainty on whether detonating a nuclear weapon at such high altitudes would cause a hole in the ozone layer. After multiple underwater tests there was evidence to show the energy created by the blast would create ozone. Project leads determined some destruction of ozone would occur which would then be replaced by the ozone created from the explosion. It was agreed that if this theory were wrong, the hole created in the ozone layer would be minuscule enough to cause no harm. Upon completion of Operation Newsreel, it was determined that there was very little evidence of any harm being caused to the natural ozone layer. Yucca Yucca was the first high-altitude test performed during Operation Hardtack I and was detonated on April 28, 1958. It was lifted by a balloon to an altitude of and had a yield of .To achieve the altitude needed, the device was attached to a large helium-filled balloon which carried it to the detonation altitude. Due to issues with high winds on Enewetak Island, the balloon launches from ground were unsatisfactory, thus creating the need for a new method. The balloons were then deployed from an aircraft carrier which helped with deployment and the inflation. While the balloons were inflated, they were unable to take too much force from wind or the plastic material of the balloons would tear. While the balloons were inflating on the aircraft carrier, the ship could match and oppose the wind speed allowing for the balloon to be inflated in still air. To make sure the launch would be successful 86 balloon launches were tested. Due to concerns of failures, many safety measures were employed. While on ground, the bomb used multiple pins to prevent certain safety features of the bomb from being deployed before liftoff. One such pin was used to stop the electrical systems so that the bomb would be unable to