A wide variety of names are commonly used for petrified wood. Fossilized wood is a general term for wood that has been petrified or preserved by other methods of fossilization. Opalized wood is petrified wood that has been replaced by opal, an amorphous form of silica.
DHS redirects here. For other uses, see DHS (disambiguation). The United States Department of Homeland Security (DHS) is a cabinet department of the United States federal government with responsibilities in public security, roughly comparable to the interior or home ministries of other countries.
How to Become a Homeland Security Agent. As part of U.S. Immigration and Customs Enforcement (ICE), Homeland Security agents are responsible for conducting investigations into terrorist threats and behavior, the smuggling of illegal substances into the country, illegal immigration, and other issues that affect national security.