UA 757 Go-Around @ SFO After Losing Separation w/ Cathay 747

UA 757 Go-Around @ SFO After Losing Separation w/ Cathay 747

UA900 from SAN executes an ATC-ordered go-around from the approach to 28L after the Cathay Pacific 747 from HKG for 28R. ATC asked Cathay to "slow and avoid overtaking United 757 on your left." Cathay responded they were at "minimum speed" and after our pilot couldn't speed up sufficiently, a go-around was ordered." Filmed from seat 8F. Our pilot later asked ATC "why - exactly - were we sent around??"