I love this sequence of pictures.

 Matt found this ultimate snow ball. Calls over James and Ava to help. (where is matt?)
 Matt appears.... and starts to push...
 Ethan appears.... now they have momentum.
Woops... look at that....  Matt on the ground, Ethan and Ava taking a break....

Don't worry, James got that snow ball to the igloo and the fun began. Thanks for being such a great Dad James.