BROWARD, UNITED STATES - FEBRUARY 15: A woman holds candle as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: A friend of the mass shooting victims makes a speech as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People cry as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: A sky lantern is released as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People lay flowers as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People lay flowers as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People light candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People hold candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People light candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People hold candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People light candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People hold candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: People light candles as they gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: A woman holds a photo and candle as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: A woman holds banner as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency

BROWARD, UNITED STATES - FEBRUARY 15: Father of 14 year-old mass shooting victim, Fred Guttenberg cries as people gather at Pine Trails Park during a commemorative ceremony held for 17 people, who lost their lives in the school shooting at Marjory Stoneman Douglas High School, in Broward's Parkland, Florida on February 15, 2018. At least 17 people were killed on February 14, 2018, when a lone gunman opened fire on a Florida high school, according to police. The victims are a mix of students and adults, officials said. Carlos Miller / Anadolu Agency