He said the greatest challenge for the Department of Veterans Affairs is filling tens of thousands of job vacancies.
A GAO report found a number of errors in the VA's tracking of suicides at its facilities.
The Los Angeles VA spent nearly $5 million to buy live cats for sleep experiments.
"What I'm looking at is the Donald Trump I know. The Donald Trump who has turned around Veteran Affairs," Wilkie said.
The veteran was suffering from PTSD and insomnia and was out of psychiatric medications.
The VA allegedly used flawed data to deny benefits to veterans who responded to a plane accident involving hydrogen bombs.
The VA IG found that 3.3 million medical appointments dropped this year were not rescheduled.
In the past month, two major organizations have pledged millions to provide support and services to veteran caregivers.
DoD saw its cases more than double last month, rising from 18,071 on July 1 to 39,591 July 31, a 119% increase.
"The words that brought us here should not be diluted, parsed or canceled," Wilkie said.
The campaign of President Donald Trump released a letter from 235 retired senior officers backing his re-election.
The news comes four years after the Air Force laid out initial plans for what its future fighter jets might look like.
The recent exercises were one of many the Air Force is conducting to test its Advanced Battle Management System.
A veteran of the Marine Corps and Army National Guard, he went through boot camp more than four decades ago.
Cmdr. Robert Arias is at least the third Navy commander removed from his job in recent weeks.