Homeland Sec. Duke Says No Harvey Cost Estimates Yet

The Department of Homeland Security is actively involved in Texas, focusing on search and rescue operations. Governor Greg Abbott has called up 12,000 National Guard members to aid in the efforts, a significant increase from the initial 3,000. The federal government, including the President and Vice President, is closely working with DHS and FEMA. The President and First Lady plan to visit Texas to show support, ensuring it does not hinder ongoing efforts. Currently, there are no preliminary estimates on the storm's cost, as the priority remains on rescue operations.

What are the ongoing operations mentioned in the text?

What is the current status of preliminary estimates regarding the storm's cost to the federal government?