Have you seen a Black Triangle?

I haven't.

What is your gummint hiding?

The United States is currently experiencing a
wave of Flying Triangle sightings that may have
intensified in the 1990s, especially towards the
latter part of the 1990s. The wave continues.
The Flying Triangles are being openly deployed
over and near population centers, including in
the vicinity of major Interstate Highways. The
behavior of these Triangular aircraft does not
conform to previous patterns of covert deployment
of unacknowledged aircraft. Neither the agenda
nor the origin of the Flying Triangles are
currently known.

Map #1: Triangle sightings in the NIDS database

Read.