:: While the U-2 does fly at a very high altitude (25,000 meters)<ref>h</ref>, the missiles in use at that time, S-75 Dvinas, have a higher max altitude, at 33,000 meters.<ref>ttp://www.pakdef.info/pakmilitary/army/sam/sa2guideline.html</ref> With the Maine, I should clarify, the current theory is that a spark in one of the coal shutes caused an explosion. | :: While the U-2 does fly at a very high altitude (25,000 meters)<ref>h</ref>, the missiles in use at that time, S-75 Dvinas, have a higher max altitude, at 33,000 meters.<ref>ttp://www.pakdef.info/pakmilitary/army/sam/sa2guideline.html</ref> With the Maine, I should clarify, the current theory is that a spark in one of the coal shutes caused an explosion. |