Not sure what is best play here. No real reads, on opponents, had been at table only an orbit.

Is is best to just lead out and get it in or check it to see what his action is?

Full Tilt No-Limit Hold'em, $0.10 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

BB ($4.83)
UTG ($6)
UTG+1 ($3.86)
MP1 ($15.88)
MP2 ($3.84)
MP3 ($0.91)
CO ($2.47)
Button ($6.39)
Hero (SB) ($9.90)

Preflop: Hero is SB with A, A
1 fold, UTG+1 bets $0.20, 1 fold, MP2 calls $0.20, MP3 calls $0.20, CO calls $0.20, 1 fold, Hero raises to $1.20, 1 fold, UTG+1 calls $1, 1 fold, MP3 calls $0.71 (All-In), 1 fold

Flop: ($3.81) K, K, 5 (3 players, 1 all-in)
Hero ??