These five programs comprise the Infrastructure Protection Program (IPP), which to date have provided more than $1.5 billion in grants to strengthen security at critical facilities ranging from chemical plants to mass transit systems and seaports.

"We're investing resources where risk is greatest and where the funds will have the most significant impact," says Homeland Security Secretary Michael Chertoff. "This year's grants reflect a rigorous, disciplined approach that places risk first, driven by hard analysis from the intelligence community and supported by common sense."

DHS has refined its grants programs over the past year to increase transparency and provide a more streamlined and interactive application process. The department expects to award IPP grants in spring 2007.

IPP fiscal year 2007 funding totals have increased by $46 million over last year.

Specific totals include:

• Port Security Grant Program: $201.2 million
• Transit Security Grant Program: $171.8 million
• Buffer Zone Protection Program: $48.5 million
• Intercity Bus Security Grant Program: $11.6 million
• Trucking Security Grant Program: $11.6 million