People wait for the start of a memorial service on June 19, 2016 in Orlando, Fla.

Supporters of the victims of the recent mass shooting at the Pulse nightclub attend a vigil at Lake Eola Park, June 19, 2016, Orlando, Fla.

Some of the fans for the Orlando City SC wave rainbow flags before the start of an MLS match between Orlando City and the San Jose Earthqueakes at Camping World Stadium in Orlando, Fla., June 18, 2016.

A woman writes a note on a cross at a memorial with wooden crosses for each of the 49 victims of the Pulse Nightclub, next to the Orlando Regional Medical Center, June 17, 2016, in Orlando, Fla.

Photos of the 49 killed in the Orlando night club shooting fill the windows of the Human Rights Campaign office in Washington, June 17, 2016.

Workers move dirt while preparing for three burials for those who died in the shooting, following the burial service of Anthony Luis Laureano Disla, a victim, June 17, 2016, in Orlando, Fla.

Josh Segarra, who is from Orlando, Fla., embraces his wife Brace following a tribute a tribute to the Pulse nightclub shooting victims at the "Survivor Tree" of the 9/11 Memorial and Museum, June 16, 2016, in New York.

A hearse carrying the casket of Kimberly Morris, a shooting victim at the Pulse gay nightclub in Orlando, drives through the cemetery after her funeral in Kissimmee, Florida, June 16, 2016.

President Barack Obama and Vice President Joe Biden depart a makeshift memorial after placing flowers in memory of shooting victims of the massacre at a gay nightclub in Orlando, Florida, June 16, 2016.

Activists carrying lit candles and flags participate in a vigil to pay tribute to the victims of the mass shooting at a gay club in Orlando, in Sao Paulo, Brazil, June 15, 2016.

People tie ribbons on the Survivor Tree at the National September 11 Memorial & Museum in honor of the victims of the Orlando nightclub attack, June 16, 2016 in New York.

Cora Bath wears a bandanna decorated with the word "love" while standing outside the visitation for Pulse nightclub shooting victim Javier Jorge-Reyes, June 15, 2016, in Orlando, Fla.

A supporter of the LGBT community holds a rainbow flag during a vigil in remembrance of the victims of the Orlando mass shooting, Manila, Philippines, June 15, 2016.

Doctors, nurses and first-responders hug after a brief prayer service in the emergency room at Florida Hospital in Orlando, Fla., June 15, 2016, to honor the victims of the Pulse nightclub mass shooting.

Names of victims of the Pulse Nightclub shooting are stitched into an American flag at a makeshift memorial at the Dr. Phillips Center for Performing Arts, June 15, 2016 in Orlando, Florida.

People interact with a comfort dog named Susie near a memorial site in honor of the victims of the Orlando mass shooting outside of the Dr. Phillips Center for the Performing Arts in Downtown, Orlando, Florida, June 14, 2016.

Jennifer Johnson leans on her boyfriend Jeansem Sambolin and her son Tyrone Clarke, 8, as they visit a makeshift memorial for the victims of the mass shooting at the Pulse Orlando nightclub, June 14, 2016, in Orlando, Fla.

A person holds a candle to pay tribute to the victims of a mass shooting at nightclub in Orlando, in Bangalore, India, June 14, 2016.

Britain's Princess Catherine signs a book of condolence for the Orlando nightclub shooting victims at the U.S. Embassy in London as Prince William looks on, June 14, 2016.

Twins Erica and Olivia Hartley, 10, light candles after a vigil in Orlando on June 13, 2016, one day after the mass shooting at the Pulse gay nightclub there.

Thousands of people gather at the Dr. Phillips Center for the Performing Arts in Orlando to pay their respects to those lost in the Pulse nightclub shooting, June 13, 2016.

People gather to remember the victims of the Pulse nightclub mass shooting in Orlando, in front of the U.S. Embassy in Copenhagen, June 13, 2016.

The Eiffel Tower in Paris was illuminated in rainbow colors in honor of the victims of the shooting in Orlando, June 13, 2016.

Spouses Nicole Edwards and Kellie Edwards observe a moment of silence during a vigil outside the Dr. Phillips Center for the Performing Arts in Orlando, June 13, 2016.

The heritage buildings on the Brussels Grand Place were lit in the colors of the rainbow , June 13, 2016, in support of the victims of the Orlando shooting.

Mourners light candles on a rainbow flag outside Barcelona's City Hall during a vigil at Sant Jaume Square, June 13, 2016, in remembrance of the lives lost in Orlando.

A raised fist at a vigil in Los Angeles for the worst mass shooting in United States history, June 13, 2016.

Mourners attend an event in Turin, Italy to show solidarity with the victims of the massacre at Pulse in Orlando, June 13, 2016.

A giant rainbow flag hangs from the U.S. consulate in Istanbul as the U.S. flag flies at half-staff, June 14, 2016.

Well-wishers release floating lanterns during a vigil in memory of the victims in Orlando, June 13, 2016.

Mourners observe a moment of silence during a vigil outside the Dr. Phillips Center for the Performing Arts, June 13, 2016, in Orlando.

People pause during a minute of silence in memory of the victims of the Pulse shooting, in the Soho district of London, June 13, 2016.

A makeshift memorial in front of the iconic gay and lesbian bar the Stonewall Inn, June 13, 2016, in New York City.

People take part in a vigil outside the Stonewall Inn to express support for the victims in Orlando, in New York City, June 13 ,2016.

A woman writes the names of Orlando shooting victims in a park across Christopher Street from the Stonewall Inn, June 13, 2016, in New York City.

City Hall in Tel Aviv, Israel, was lit up with a U.S. flag design in solidarity with the Orlando victims, June 12, 2016.

Jeffrey Erikson and Jamie Fernandez hold each other during a moment of silence at a vigil in Cal Anderson Park in Seattle for the victims of the shooting in Orlando, June 12, 2016.

The City Hall and Grand Place of Brussels is illuminated in rainbow colors for the victims of the mass shooting in Orlando, June 13, 2016.

Maurice Forbes, center, and others during a vigil at the Gay and Lesbian Community Center of Southern Nevada, June 12, 2016, in Las Vegas.

People gather in San Francisco's Castro neighborhood for a vigil for the victims of the Orlando shooting, June 12, 2016.

Rainbow banners hang from City Hall in Paris in honor of the victims of the mass shooting in Orlando, June 13, 2016.

People gather for a vigil outside the Stonewall Inn — the site of the 1969 riots that marked the birth of the modern gay rights movement — in New York City, June 12, 2016.

People gather during a vigil in downtown Seoul, South Korea, to remember victims of the shooting in Orlando, June 13, 2016.

Mourners in Dallas hold an LED sign during a vigil, June 12, 2016, for victims of the attack in Orlando.

One World Trade Center's antenna spire in New York is lit up in rainbow colors — an international symbol of LGBT pride — to honor the victims of the mass shooting in Orlando, June 12, 2016.

The Sydney Harbor Bridge is lit with the colors of the rainbow, June 13, 2016, as hundreds of Australians gathered in solidarity with the global LGBT community after the worst mass shooting in modern U.S. history.

A rainbow flag flies at half-staff on the Space Needle in Seattle, June 12, 2016, in honor of the victims of the nightclub shooting in Orlando.

In Washington flags have been lowered to half-staff at the Washington Monument in honor of those killed in Orlando, June, 13, 2016.

Mourners attend a candlelight vigil in Toronto, June 12, 2016, for the victims of the shooting in Orlando.

People lay down flowers during a vigil in front of the U.S. Embassy in Berlin, June 13, 2016, for the victims of the attack in Orlando.

Mourners gather for a vigil near the Centre Pompidou in Paris, June 12, 2016, for the victims of the mass shooting in Orlando.

Participants hold candles during a vigil in Hong Kong for the victims of the Orlando shooting, June 13, 2016.

Mourners lay flowers during a vigil in New York City for the victims of the mass shooting at Pulse nightclub in Orlando, June 12, 2016.