President Obama ordered flags to be lowered to half-staff Friday after a deadly shooting the previous night in Dallas killed five police officers and injured seven.<br />Obama ordered the flag at the White House and all others on public buildings and grounds across the country to be flown at half-staff until Tuesday evening to honor the victims in Dallas.<br />It's the 67th time Obama has ordered flags at half-staff, an act he has performed more than any other president, according to a USA TODAY analysis.<br />Earlier Friday, Obama called the Dallas shooting a "vicious, calculated and despicable attack on law enforcement."
