A9 in Fuper, whats the plan?

[ZJ123]

Full Tilt Poker Game #4146143943: $55,000 Guarantee (30742806), Table 27 - 50/100 - No Limit Hold'em - 21:25:19 ET - 2007/11/11
Seat 1: mychucks (5,485)
Seat 2: GreatDANbino (4,546)
Seat 3: TheKark (4,670)
Seat 4: Zero Aces (15,507)
Seat 5: FloridaHawk (9,405)
Seat 6: BadLuck26 (6,712)
Seat 7: charder30 (4,840)
Seat 8: Marco725 (4,297)
Seat 9: KAFFEPUNCH (7,780)
charder30 posts the small blind of 50
Marco725 posts the big blind of 100
The button is in seat #6
*** HOLE CARDS ***
Dealt to charder30 [9d Ah]
KAFFEPUNCH folds
mychucks folds
GreatDANbino has 15 seconds left to act
GreatDANbino folds
TheKark folds
Zero Aces calls 100
FloridaHawk calls 100
BadLuck26 folds
charder30 calls 50
Marco725 checks
*** FLOP *** [Ad Ts 4h]
charder30 has 15 seconds left to act
charder30 checks
Marco725 checks
Zero Aces bets 400
FloridaHawk calls 400
charder30

Call now? what are we doing on blank turns etc?