People wait for the start of a memorial service on June 19, 2016 in Orlando, Fla. Spencer Platt/Getty Images

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. John Raoux/AP Photo

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. Jacob Langston/Orlando Sentinel via AP Photo

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. Drew Angerer/Getty Images

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. Kevin Lamarque/Reuters

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. David Goldman/AP Photo

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. Kathy Willens/AP Photo

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. Jim Young/Reuters

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. Carlos Barria/Reuters

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. Miguel Schincariol/AFP/Getty Images

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. Justin Sullivan/Getty Images

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. David Goldman/AP Photo

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. Mark R. Cristino/EPA

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. Joe Burbank/Orlando Sentinel via AP

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. Drew Angerer/Getty Images

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. John Taggart/EPA

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. David Goldman/AP Photo

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. Jagadeesh Nv/EPA

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. Philip Toscano/AP Photo

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. Adrees Latif/Reuters

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. Samuel Corum/Anadolu Agency/Getty Images

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. Jens Astrup/Reuters

The Eiffel Tower in Paris was illuminated in rainbow colors in honor of the victims of the shooting in Orlando, June 13, 2016. Ludovic Marin/AFP/Getty Images

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. AFP/Getty Images

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. AFP/Getty Images

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. AFP/Getty Images

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

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

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

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

Mourners observe a moment of silence during a vigil outside the Dr. Phillips Center for the Performing Arts, June 13, 2016, in Orlando. Brendan Smialowski/AFP/Getty Images

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. Dylan Martinez/Reuters

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

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. Kena Betancur/AFP/Getty Images

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. Spencer Platt/Getty Images

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

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. Genna Martin/AP Photo

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. Olivier Hoslet/EPA

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

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

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

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. Justin Lane/EPA

People gather during a vigil in downtown Seoul, South Korea, to remember victims of the shooting in Orlando, June 13, 2016. Chung Sung-Jun/Getty Images

Mourners in Dallas hold an LED sign during a vigil, June 12, 2016, for victims of the attack in Orlando. Laura Buckman/AFP/Getty Images

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. Andrew Gombert/EPA

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. William West/AFP/Getty Images

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. Omar Torres/AFP/Getty Images

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

Mourners attend a candlelight vigil in Toronto, June 12, 2016, for the victims of the shooting in Orlando. Christopher Katsarov/AP Photo

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. Markus Schreiber/AP Photo

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

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