"Texas is a big guard state as it is and their helicopter force has already over doubled, but there was no extra maintenance there", said Maj.
The soldiers will mostly work search-and-rescue missions, spokesman Lt.
The storm has affected millions along the Texas and Louisiana Gulf Coast, leaving many without drinking water or livable homes.
"That'll free up first responders and local law enforcement to focus on other areas", he said Friday.
About 200 Pennsylvania National Guard members on September 4 departed by air and convoy to Texas.
Hutchinson authorized 1,500 guardsmen to be sent to Texas, and they'll deploy on Saturday, he said.
They join two Pennsylvania CH-47 Chinook Helicopters sent September 1, and six airmen who were sent last week who were sent last week to assist with communications efforts, the wesbite reports.
The state of Texas has requested support from Iowa. Stephen Wright, a Guard public affairs specialist.
The National Guard has no time to rest.
The soldiers will join Guardsmen from across the nation who are being activated in response to Hurricane Harvey.
Schroeder says so far, they've rescued more than 200 survivors and dozens of dogs, whom many survivors refuse to leave behind.
"We're just trying to bring all the supplies and equipment that these guys need to set up operations", Bundy said.