Do You Accept That What Crashed Near Roswell,New Mexico In July 1947 Was An Alien Spacecraft?

Keep in mind that two of the officers at the air base near Roswell (Major Marcel and Lt. Trowbridge) made public declarations that it was indeed an alien craft.Major Marcel's son,who is still alive,handled material from the craft and has stated none of it was from this planet.The pages of the unit diary from the bomb group stationed at the base are missing for three days from July 1947.Military people tell me the only explanation for missing pages is a matter of extreme national security.To this day the USAF huffs and puffs to explain away any indication the crashed craft was of alien origin.Would the Air Force do that if it was just a weather balloon?So if you accept it or not;state your reasons.