Square RSS Df Sum AIC 169 61.3 - am 1 26.2 195 63.9
- qsec 1 109.0 278 75.2
- wt 1 183.3 353 82.8
If you remove any further words, this table will display the AIC, with the row representing the active model.
If you leave the model in its current state, the AIC is 61.3 and the extra terms have been eliminated. If you remove those phrases, each subsequent row displays the AIC (remove am, get AIC of 63.9, etc.). You are true that removing any of the remaining phrases will increase the AIC because you have reached the local minimum for the AIC.