The 5σ flux upper limit as a function of sky position for the six GWs from O3 identified with a possible neutron star component and p astro > 0.5. The purple gradient represents the combined Fermi-GBM and Swift-BAT flux upper limits for source positions at each point on the sky. The star symbol represents the zenith direction of Fermi-GBM, the square symbol represents the center of the Swift-BAT FOV, and the green contour represents the 90% credible area of the LVK localization. The blue region is the nonvisible portion of the sky that is occulted by the Earth for Fermi-GBM and outside the Swift-BAT FOV.