The series documented why and how the Ronald Reagan Building, the most expensive federal building ever constructed, cost 125 percent more than Congress was originally led to believe. Among the findings: In most big construction projects, contract prices rise roughly 5 percent during construction; the 10 biggest contracts on this project increased 41 percent. The government was supposed to spend $29,000 to store a historic fountain, instead it paid $80,000. A $1,600 contract for rat traps grew to $14,000. The series also looks at the decision-making that led to the waste of tens of millions of dollars on delays and miscalculations.