Dear, dear Jamie,
My thoughts are heartfelt, extended to you and Ryan, your sisters, your mom and your extended family upon the loss of your dad.
Six-plus years down the road, I'll tell you that it never quite goes away... I still dream of (and sometimes fully expect) my dad to blow through my front door with a cheerful "howdy, bub!" and a quick kiss and a willingness to help me with whatever challenge I find at hand, whether in the mechanics of maintaining a viable residence or simply the emotional ups and downs of my constantly changing marital status and/or career path.
Nothing replaces a loving dad. My heart is so very with you.