Earlier in the month, it came to light that an audit had found a contractor providing intelligence and training services to the Defense Department had billed luxury cars to the government, sought reimbursements for the salaries of well-connected secretaries who did little work while earning excessive salaries.

All told, the Defense Contract Audit Agency questioned $50 million the British company New Century Consulting billed to the Pentagon, according to a report summarized in a letter from Sen. Claire McCaskill, D-Mo., to Defense Secretary Jim Mattis. The vehicles, including Porsches, a Bentley and an Aston Martin, were used exclusively by the CEO and other top executives at the company, DCAA found.

New Century operated as a subcontractor for Imperatis Corp., which has an extended history of problematic dealings with the federal government. Last year, Imperatis abruptly quit a cybersecurity contract it had with the Office of Personnel Management and the Homeland Security Department, citing “financial distress.” Defense contracted with Imperatis on its Legacy East project to provide “counterinsurgency intelligence experts” to train Afghani security forces.

The Army project maintained New Century as a subcontractor from 2008 to 2013. New Century was unable to prove that several employees billing as executive assistants actually performed any work for the company. Their average salary in 2012 was $420,000, according to the report, and DCAA labeled them as the significant others of the CEO and chief financial officer.

In 2013, the company’s CEO and chief operating officer billed $2 million in combined salary, well above the $200,000 annual executive pay cap as spelled out in the Federal Acquisition Regulation. New Century also overbilled for its consultants by a combined $15 million by charging the government their full rate even when they were not deployed overseas and not working. The contract prohibited the company from purchasing automatic weapons, so they bought $42,000 worth of the firearms using cash. They also expensed to the government more than $1,500 in alcohol purchases.

Other questionable costs DCAA identified stemmed from “severance payments, rent, unnecessary licensing fees, extensive austerity pay and expenses for air travel for personal reasons.”

The Army selected New Century as the primary contractor in 2013, despite what McCaskill called “all of the listed issues with NCC’s performance and billing practices.” DCAA is currently investigating New Century for its time as the prime contractor on Legacy East, which ranged from 2013 through 2016.

The Special Inspector General for Afghanistan Reconstruction previously questioned the Legacy East contract, finding in a 2015 report that Imperatis — which formerly conducted business as Jorge Scientific — billed the government for $135 million in potentially unsupported claims. Those allegations came after a video surfaced of Jorge Scientific employees stationed in Afghanistan intoxicated from alcohol and drug use while, for example, tossing live ammunition rounds and fire extinguishers into a fire.

“Whoever approved of this spending should be fired,” said McCaskill, the top ranking Democrat on the Senate Homeland Security and Governmental Affairs Committee. “It’s a slap in the face to Missouri taxpayers and the entire contracting process. I’m going to get to the bottom of what happened with this contract and why a company with so many previous problems keeps getting contracts.”

More recently, Christopher Sherwood, a Defense spokesman, said the department has issued the audit report to the contracting officer, who will make “all future decisions about subsequent actions with the contractors,” including whether the Pentagon will attempt to recover any of the costs of the contract.