(KTRS) – By the end of the week we will know the future site of a federal spy agency’s regional headquarters.

The National Geospatial-Intelligence Agency Director Robert Cardillo is expected to announce his decision on Friday. Two sites have emerged as the front runners for the project–one in north St. Louis and the other in a field next to Scott Air Force Base. This is a big prize with the project carrying a price tag of more than $1.5 billion.

The NGA brings with it 3,100 employees and, according to the Post-Dispatch, the agency has an annual budget closing in on $5 billion.

Among other concessions, governments in Missouri and Illinois are offering the needed land to the NGA for free.