Sadly, these aborted landings are not uncommon at all.
We have experienced a couple. The one most memorable was a number of years back flying into YYZ on a big BWIA L1011....We were just about to touchdown...having seen all the airport hotels up close and personal...just waiting for that initial thud of the wheels..and then all of a sudden the un mistakable sound of the engines at full thrust...and we start to ascend!
My spouse was able to see a 737 crossing over our runway!!
A very nearly tragic occurence. I was shocked that things didn't stall on our big bird but up we went again... we circled around.. A few moments later....the Pilot came on the intercom
" Oh Hi Folks...a little traffic on the runway.....We'll try this again Shall we?"
His voice was reassuringly calm ( Almost like a recording) Did the trick...and I believe helped others remain calm.