cloaking ship over Yuma, AZOn Monday, March the 16th, 2009 at approximately 2107 hrs. I was sitting on the west side of the place where I live. At that particular time I was watching with my binoculars (20x50) at the night sky when I spotted what looked like a triangular cloud, at least that is what it look when I first saw it. I straighten myself so I could get a better look as I was in uncomfortable position never taking my eyes on the mysterious shape. The cloud travel at about forty five degrees from the west horizon, from south to north. It sort of looked like the Star Trek Romulian war ships when they are cloaking, sort of blurry trails behind the front cloud but I could only see the outer edge. I followed this shape until it disappeared in the northern horizon. I want to point out that you could not see this with the naked eye nor did it make any sound. The whole event took about thirty second since I spotted this in the middle of the sky or its trajectory. I also have to confessed that this sight gave me chills and made me a little nervous since I have seen other “strange” objects before but nothing like this big or weird.At approximately thirty minutes after this event two marine jets took off from the MCAS base in the direction that the device had taken but instead of following all the way north the sort of cut in the middle of the sky and continued on an northeasterly direction.I am submitting this report with the hope that there may be someone else that saw this object.