Description: Ana Luisa Cid reports a personal sighting on 17 February 2005. At 9:30 a.m. I witnessed the transit of this flying object toward Mexico City's eastern regions. I was writing an article on my computer when something shiny made me turn to the left and look through the window. It was an elongated structure of considerable size, visible to the unaided eye, which traveled horizontally at great speed. When I reached for my camcorder to shoot video, the brilliant structure made a sudden reverse motion and hid behind the rooftop. I remained patient and waited for it to emerge, obtaining the following images.