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 Opalized wood is petrified wood that has been replaced by opal, an amorphous form of silica.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.
Federal Protective Service Officer Description & Career Outlook. The US Federal Protective Service (FPS) is a division of the Department of Homeland Security. FPS officers provide security and law enforcement services to buildings that are used by the federal General Services Administration (GSA), including federal courthouses.