Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The disparate shapes are faintly but distinctly visible in this monocular image, e.g. one can see that (clockwise from top-left) the random dots depict blank, fir-tree, star, disk.
