The Washington Post first revealed the plan on Tuesday stating that Trump and during a recent meeting with top military officials in Pentagon expressed his wishes, which were taken as a "presidential directive".
A White House official said the planning process is still in the "brainstorming" stages.
"I don't know how they're going to promote it or when they're going to suggest it - but we will always be concerned with (the parade's) impact on the city, the impact on safety, pulling personnel, and our roadways, and the attention it would attract", Bowser told Channel 9.
Military parades of the kind that are common in authoritarian countries like China and North Korea are not quintessentially American.
The last such parade was held in Washington DC in June 1991 at the end of the Gulf War. When CNN's Pamela Brown asked why Trump doesn't just visit the troops in Iraq or Afghanistan instead of putting on a show, Sanders said "nothing has been decided or locked in stone". "We will share more information throughout the planning process".More news: Quentin Tarantino responds to Uma Thurman allegations
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"My hope is this parade will not focus on military hardware, but on military service, sacrifice, and saying 'Thank You" to those who protect our nation", Graham said on Twitter. Wasteful political pomp? Have a say in our informal poll, and feel free to elaborate in the comments section. The parade also commemorated the 100th anniversary of the United States' entry into World War I in 1917.
Mattis is briefing reporters at the White House.
In January, last year, the newly appointed Trump administration was contemplating having a "Red Square/North Korea-style parade" for the inauguration, a source revealed to the Huffington Post.
The former general later confirmed that plans for the parade were underway, though nothing concrete had been decided.
President Trump has requested that the military begin preparations for a military parade in the nation's capital, CBS News has confirmed.
Representative Lee Zeldin (R-N.Y.), who has publicly defended Trump before, discredited the idea of weapons and military vehicles rolling through the heart of Washington, D.C.