<P> Intel began preparing in early December 2016, working out the logistics . After coming to a consensus with the creative team, they began storyboarding the drones, finally deciding to display a star array, the American flag and the Pepsi logo . The drones used for the show had a plastic and foam body for soft impacts, were about 1 foot (0.30 m) square and weighed 8 ounces (0.50 lb). They were connected wirelessly to a central computer and each executed their unique, individual choreography . The computer checked the GPS signal strength and the drones' battery levels . </P> <P> Gaga's halftime performance was critically acclaimed . A writer for Time described the show as "among the very best in the history of the form, racing ambitiously through the artist's entire career and putting forward the qualities of the artist that just work". The New Yorker review described Gaga and the show as "an astute, intense, and disciplined performance". Andrew Unterberger of Billboard felt the performance would go down as "one of the best halftime sets of the century" and that it had cemented her as a "legacy artist...It was Gaga through and through, and every song felt more gratifying than the last...reminding you why Gaga's pop supremacy was so inarguable not all that long ago ." He noted that there was nothing "outrageous" in the show . </P> <P> Chris Chase of Fox Sports said the halftime show would "go down with Michael, Prince, Beyoncé, and Bruce as the greatest ever ." Marguerite Ward from CNBC considered the show Gaga's comeback, noting how she had announced in 2015 that she would retire . "Fast forward to 2017 . (Lady Gaga) is back on the global stage, gearing up for a new world tour", she added . Writing for Variety, Sonia Saraiya described the show as "breathtaking" and "soar (ing)", but felt it "lacked an iconic moment or emotional button". Daniel Fienberg of The Hollywood Reporter was disappointed the show never had a "close - up or any sort of swooping medium - shot to accentuate (Gaga's) movement". He felt "the weakly presented dive" detracted from her rendition of "God Bless America" and "This Land Is Your Land". </P> <P> Nico Land of Salon noted Gaga was the first artist to refer to the LGBT community during a Super Bowl halftime show when she sang "Born This Way". Land considered this a "crucial milestone" for the community . He said, "Putting LGBT issues on the main stage at the Super Bowl served as a powerful message of queer solidarity in the face on an unprecedented wave of challenges from our government ." Although Gaga did not openly criticize Trump, Land viewed the singer's opening performance was a subtle "dig" at the President . Singing "This Land Is Your Land", a protest anthem for the Women's Marches across the country following Trump's inauguration, Gaga referred to Trump's policies on immigration . According to Joanna Robinson of Vanity Fair, the performance was a "dog whistle" against Trump's plans to build a wall between the United States and Mexico . </P>

Which musician has never taken the field as part of the super bowl halftime show