Riverhawk Aviation, Inc. (fka RHWA)

[marilu]

my answer here is merely speculation

take a look at the website:

http://www.vivainternational.org/

now try to buy a ticket thru their software. it isn't there. It stands to reason though it soon will be a working website along with a PR. Increased volume.
This alone could trigger a spike and a selling opportunity.

Perhaps you or others have done DD which would indicate news.
The OTC stocks thrive on news. Try to develop an attitude of "trading" stocks as opposed to "investing".
Be qwik on the sell button and move on.