Minecraft | Jetpacks in only one command [1.9 Snapshot!]

/summon FallingSand ~ ~1 ~ {
id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:"fill ~ ~1 ~ ~ ~-17 ~ air"},Riding:{
id:FallingSand,Time:1,Block:stained_hardened_clay,Data:15,Riding:{
id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:"/give @p chainmail_chestplate 1 0 {display:{Name:\"Jetpack\"},ench:[{id:-1,lvl:1}]}",auto:1},Riding:{
id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:"scoreboard objectives add JPsne stat.sneakTime",auto:1},Riding:{
id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:"scoreboard objectives add JPjet dummy",auto:1},Riding:{
id:FallingSand,Time:1,Block:stained_glass,Data:15,Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"effect @a[score_JPsne_min=9,score_JPjet_min=1] resistance 4 10 true",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"execute @a[score_JPsne_min=1,score_JPjet_min=1] ~ ~ ~ particle flame ~ ~ ~ 0.1 0.1 0.1 0.15 5 force",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"scoreboard players reset @a[score_JPsne_min=10,score_JPjet_min=1] JPsne",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"effect @a[score_JPsne_min=1,score_JPsne=7,score_JPjet_min=1] levitation 1 20 true",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"effect @a[score_JPsne_min=8,score_JPsne=8,score_JPjet_min=1] clear",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"execute @a[score_JPsne_min=1,score_JPjet_min=1] ~ ~ ~ particle cloud ~ ~ ~ 0.1 0.1 0.1 0.2 10 force",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"scoreboard players add @a[score_JPsne_min=1,score_JPjet_min=1] JPsne 1",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"scoreboard players set @p[score_JPjet_min=0,score_JPjet=1] JPjet 2 {Inventory:[{id:\"minecraft:chainmail_chestplate\",Count:1b,Slot:102b}]}",auto:1},Riding:{
id:FallingSand,Time:1,Block:repeating_command_block,Data:5,TileEntityData:{Command:"scoreboard players remove @p[score_JPjet_min=1,score_JPjet=2] JPjet 1",auto:1},Riding:{
id:FallingSand,Time:1,Block:stained_glass,Data:15,Riding:{
id:FallingSand,Time:1,Block:stained_hardened_clay,Data:15
}}}}}}}}}}}}}}}}}